Some configuration ideas for using the A495 for aerial photos The Canon Powershot A495 is the ca...
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13 CURRENT | cfastie |
August 29, 2012 00:44
| almost 12 years ago
Some configuration ideas for using the A495 for aerial photosThe Canon Powershot A495 is the camera model of the PLOTS visible/IR camera tool Personal preferences vary, but the choices below have worked well during mapping flights. In some situations, setting the camera on full automatic mode can produce good results, and starting in auto mode is a good idea. Most of the suggestions below are for fine-tuning the quality of mapping photos. Refer to them if automatic settings are producing blurry, dark, or grainy photos. For better quality maps, manual settings are often preferred over automatic settings so each photo has similar qualities and will stitch together more seamlessly into a map. The biggest exception is exposure, which is a challenge to set correctly before launch, and may need to change during a flight. These suggestions are for the Powershot A495, but also apply to many similar Powershots. Program Mode -- To enter Program mode, which allows manual control of the features below, press the lower left button on the camera back and select "P." Daylight White Balance -- When the camera is in Program mode, select the "sun" icon for daylight white balance (Press "Menu"). This will make color balance consistent, whereas automatic white balance (AWB) allows color balance to vary among photos. Some testing is needed to determine if other white balance settings (cloudy, tungsten, etc) give better results with the IR camera even in sunlight. ISO (sensitivity to light) -- In Auto mode, ISO can vary among photos making some more noisy than others. On sunny days, locking the ISO on 80 (the "slowest" sensitivity to light) should produce the crispest images. On darker days, setting the ISO higher (100-200) will allow faster shutter speeds (less motion blur), but the images will be noisier (grainier). ISO settings higher than 200 are not recommended because the images will be rather noisy, but in dim light this may be the only option. The IR modified A495 needs several "stops" more light (compared to the unmodified A495) to make an exposure, so high ISO settings will probably be routine even in bright sunlight. In Program mode, press "FUNC. SET" to set ISO manually. Manual Focus -- For most mapping flights, everything will be in focus if the camera is focused on a distance between 25 feet and infinity. Unfortunately, the A495 does not have a manual focus mode, so the camera searches for something to focus on for each shot. When the camera is moving or when the scene is homogeneous, the automatic focus system may fail to focus well. In Program mode, the A495 can be set on "Infinity" focus mode. In Program mode, press the left side of the rocker button for focus options. Additional information is needed to confirm how this "Infinity" mode works, but the focus does not seem to stay locked on infinity. Infinity mode is apparently an automatic focus mode that never tries to focus closer than about 10 feet away. This can help in some situations. More expensive Powershots have full manual focus control. For a sneaky way to lock focus on the A495, see "Continuous Mode" below. Image Stabilization -- The A495 does not have image stabilization. That's okay because it probably does not help on balloon or kite flights. Exposure Compensation -- On sunny days, the view from above is bright, and the automatic exposure system can be fooled. The A495 can compensate for such scenes by reducing the automatically chosen exposure in increments of 1/3 f-stop. Setting the exposure compensation to -1/3 or -2/3 can eliminate overexposed highlights. In Program mode, press the up arrow and set the slider. Manual Exposure -- The A495 does not have a manual exposure setting, it has only full automatic exposure. In some situations, this can allow the shutter speed to get too slow for aerial shots. Enhancing the camera firmware with CHDK adds a shutter priority exposure mode. This will keep the shutter speed constant while adjusting aperture to get the proper exposure. More expensive Powershots have full manual, shutter speed priority, and aperture priority exposure modes. For a sneaky way to lock exposure on the A495, see "Continuous Mode" below. Continuous Mode -- Most Powershots can be operated with both exposure (shutter speed and f/stop) and focus locked if the shutter button is held down continuously and the camera is in "Continuous" shutter mode (press "FUNC. SET"). The camera uses its automatic systems to set the focus, shutter speed, and f/stop for the first photo, and then uses the same settings for all subsequent photos as long as the shutter button remains depressed. It can be tricky to make sure that the first photo is taken while the camera is pointed at a scene similar to the aerial scenes you want to capture. It is not possible to choose which settings to use, so the camera may choose a shutter speed too slow for aerial photography, or a focus distance too close. It is possible to stop continuous mode and check the settings for the first photos taken ( in review mode press "Menu," "Info Display," "Detailed") but then you have to start the camera shooting again with no guarantee that the settings will be the same. Battery Saving Features
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12 | cfastie |
August 26, 2012 17:46
| almost 12 years ago
Some configuration ideas for using the A495 for aerial photosThe Canon Powershot A495 is the camera model of the PLOTS visible/IR camera tool Personal preferences vary, but the choices below have worked well during mapping flights. In some situations, setting the camera on full automatic mode can produce good results, and starting in auto mode is a good idea. Most of the suggestions below are for fine-tuning the quality of mapping photos. Refer to them if automatic settings are producing blurry, dark, or grainy photos. For better quality maps, manual settings are often preferred over automatic settings so each photo has similar qualities and will stitch together more seamlessly into a map. The biggest exception is exposure, which is a challenge to set correctly before launch, and may need to change during a flight. These suggestions are for the Powershot A495, but also apply to many similar Powershots. Program Mode -- To enter Program mode, which allows manual control of the features below, press the lower left button on the camera back and select "P." Daylight White Balance -- When the camera is in Program mode, select the "sun" icon for daylight white balance (Press "Menu"). This will make color balance consistent, whereas automatic white balance (AWB) allows color balance to vary among photos. Some testing is needed to determine if other white balance settings (cloudy, tungsten, etc) give better results with the IR camera even in sunlight. ISO (sensitivity to light) -- In Auto mode, ISO can vary among photos making some more noisy than others. On sunny days, ISO 80 (the "slowest" sensitivity to light) should produce the crispest images. On darker days, setting the ISO higher (100-200) will allow faster shutter speeds (less motion blur), but the images will be noisier (grainier). ISO settings higher than 200 are not recommended because the images will be rather noisy, but in dim light this may be the only option. The IR modified A495 needs several "stops" more light (compared to the unmodified A495) to make an exposure, so high ISO settings will probably be routine even in bright sunlight. In Program mode, press "FUNC. SET" to set ISO manually. Manual Focus -- For most mapping flights, everything will be in focus if the camera is focused on a distance between 25 feet and infinity. Unfortunately, the A495 does not have a manual focus mode, so the camera searches for something to focus on for each shot. When the camera is moving or when the scene is homogeneous, the automatic focus system may fail to focus well. In Program mode, the A495 can be set on "Infinity" focus mode. In Program mode, press the left side of the rocker button for focus options. Additional information is needed to confirm how this "Infinity" mode works, but the focus does not seem to stay locked on infinity. Infinity mode is apparently an automatic focus mode that never tries to focus closer than about 10 feet away. This can help in some situations. More expensive Powershots have full manual focus control. For a sneaky way to lock focus on the A495, see "Continuous Mode" below. Image Stabilization -- The A495 does not have image stabilization. That's okay because it probably does not help on balloon or kite flights. Exposure Compensation -- On sunny days, the view from above is bright, and the automatic exposure system can be fooled. The A495 can compensate for such scenes by reducing the automatically chosen exposure in increments of 1/3 f-stop. Setting the exposure compensation to -1/3 or -2/3 can eliminate overexposed highlights. In Program mode, press the up arrow and set the slider. Manual Exposure -- The A495 does not have a manual exposure setting, it has only full automatic exposure. In some situations, this can allow the shutter speed to get too slow for aerial shots. Enhancing the camera firmware with CHDK adds a shutter priority exposure mode. This will keep the shutter speed constant while adjusting aperture to set exposure. More expensive Powershots have full manual, shutter speed priority, and aperture priority exposure modes. For a sneaky way to lock exposure on the A495, see "Continuous Mode" below. Continuous Mode -- Most Powershots can be operated with the exposure (shutter speed and f/stop) and focus locked if the shutter button is held down continuously and the camera is in "Continuous" shutter mode (press "FUNC. SET"). The camera uses its automatic systems to set the focus, shutter speed, and f/stop for the first photo, and then uses the same settings for all subsequent photos as long as the shutter button remains depressed. It can be tricky to make sure that the first photo is taken while the camera is pointed at a scene similar to the aerial scenes you want to capture. It is not possible to choose which settings to use, so the camera may choose a shutter speed too slow for aerial photography, or a focus distance too close. It is possible to stop continuous mode and check the settings for the first photos taken ( in review mode press "Menu," "Info Display," "Detailed") but then you have to start the camera shooting again with no guarantee that the settings will be the same. Battery Saving Features
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11 | cfastie |
August 26, 2012 17:25
| almost 12 years ago
Some configuration ideas for using the A495 for aerial photosThe Canon Powershot A495 is the camera model of the PLOTS visible/IR camera tool Personal preferences vary, but the choices below have worked well during mapping flights. In some situations, setting the camera on full automatic mode can produce good results, and starting in auto mode is a good idea. Most of the suggestions below are for fine-tuning the quality of mapping photos. Refer to them if automatic settings are producing blurry, dark, or grainy photos. For better quality maps, manual settings are often preferred over automatic settings so each photo has similar qualities and will stitch together more seamlessly into a map. The biggest exception is exposure, which is a challenge to set correctly before launch, and may need to change during a flight. These suggestions are for the Powershot A495, but also apply to many similar Powershots. Program Mode -- To enter Program mode, which allows manual control of the features below, press the lower left button on the camera back and select "P." Daylight White Balance -- When the camera is in Program mode, select the "sun" icon for daylight white balance (Press "Menu"). This will make color balance consistent, whereas automatic white balance (AWB) allows color balance to vary among photos. Some testing is needed to determine if other white balance settings (cloudy, tungsten, etc) give better results with the IR camera even in sunlight. ISO (sensitivity to light) -- In Auto mode, ISO can vary among photos making some more noisy than others. On sunny days, ISO 80 (the "slowest" sensitivity to light) should produce the crispest images. On darker days, setting the ISO higher (100-200) will allow faster shutter speeds (less motion blur), but the images will be noisier (grainier). ISO settings higher than 200 are not recommended because the images will be rather noisy, but in dim light this may be the only option. The IR modified A495 needs several "stops" more light (compared to the unmodified A495) to make an exposure, so high ISO settings will probably be routine even in bright sunlight. In Program mode, press "Func. Set" to set ISO manually. Manual Focus -- In Program mode, the A495 can be set on "Infinity" focus mode. For most mapping flights, everything will be in focus if the camera is focused on a distance between 25 feet and infinity. In Program mode, press the left side of the rocker button for focus options. Additional information is needed to confirm how this "infinity" mode works. In some cameras, the focus does not stay locked on infinity. Infinity mode is apparently an automatic focus mode that never tries to focus closer than about 10 feet away. To lock focus, see "Continuous Mode" below. Image Stabilization -- The A495 does not have image stabilization. That's okay because it probably does not help on balloon or kite flights. Exposure Compensation -- On sunny days, the view from above is bright, and the automatic exposure system can be fooled. The A495 can compensate for such scenes by reducing the automatically chosen exposure in increments of 1/3 f-stop. Setting the exposure compensation to -1/3 or -2/3 can eliminate overexposed highlights. In Program mode, press the up arrow and set the slider. Manual Exposure -- The A495 does not have a manual exposure setting, it has only full automatic exposure. In some situations, this can allow the shutter speed to get too slow for aerial shots. Enhancing the camera firmware with CHDK adds a shutter priority exposure mode. This will keep the shutter speed constant while adjusting aperture to set exposure. Continuous Mode -- Most Powershots can be operated with the exposure (shutter speed and f/stop) and focus locked if the shutter button is held down continuously and the camera is in "Continuous" shutter mode (press "FUNC. SET"). The camera uses its automatic systems to set the focus, shutter speed, and f/stop for the first photo, and then uses the same settings for all subsequent photos until the shutter button is released. It can be tricky to make sure that the first photo is taken while the camera is pointed at a scene similar to the aerial scenes you want to capture. It is not possible to choose which settings to use, so the camera may choose a shutter speed too slow for aerial photography, or a focus distance too close. It is possible to stop continuous mode and check the settings for the first photos taken ( in review mode press "Menu," "Info Display," "Detailed") but then you have to start the camera shooting again with no guarantee that the settings will be the same. Battery Saving Features
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10 | cfastie |
August 26, 2012 17:20
| almost 12 years ago
Some configuration ideas for using the A495 for aerial photosThe Canon Powershot A495 is the camera model of the PLOTS visible/IR camera tool Personal preferences vary, but the choices below have worked well during mapping flights. In some situations, setting the camera on full automatic mode can produce good results, and starting in auto mode is a good idea. Most of the suggestions below are for fine-tuning the quality of mapping photos. Refer to them if automatic settings are producing blurry, dark, or grainy photos. For better quality maps, manual settings are often preferred over automatic settings so each photo has similar qualities and will stitch together more seamlessly into a map. The biggest exception is exposure, which is a challenge to set correctly before launch, and may need to change during a flight. These suggestions are for the Powershot A495, but also apply to many similar Powershots. Program Mode -- To enter Program mode, which allows manual control of the features below, press the lower left button on the camera back and select "P." Daylight White Balance -- When the camera is in Program mode, select the "sun" icon for daylight white balance (Press "Menu"). This will make color balance consistent, whereas automatic white balance (AWB) allows color balance to vary among photos. Some testing is needed to determine if other white balance settings (cloudy, tungsten, etc) give better results with the IR camera even in sunlight. ISO (sensitivity to light) -- In Auto mode, ISO can vary among photos making some more noisy than others. On sunny days, ISO 80 (the "slowest" sensitivity to light) should produce the crispest images. On darker days, setting the ISO higher (100-200) will allow faster shutter speeds (less motion blur), but the images will be noisier (grainier). ISO settings higher than 200 are not recommended because the images will be rather noisy, but in dim light this may be the only option. The IR modified A495 needs several "stops" more light (compared to the unmodified A495) to make an exposure, so high ISO settings will probably be routine even in bright sunlight. In Program mode, press "Func. Set" to set ISO manually. Manual Focus -- In Program mode, the A495 can be set on "Infinity" focus mode. For most mapping flights, everything will be in focus if the camera is focused on a distance between 25 feet and infinity. In Program mode, press the left side of the rocker button for focus options. Additional information is needed to confirm how this "infinity" mode works. In some cameras, the focus does not stay locked on infinity. Infinity mode is apparently an automatic focus mode that never tries to focus closer than about 10 feet away. Image Stabilization -- The A495 does not have image stabilization. That's okay because it probably does not help on balloon or kite flights. Exposure Compensation -- On sunny days, the view from above is bright, and the automatic exposure system can be fooled. The A495 can compensate for such scenes by reducing the automatically chosen exposure in increments of 1/3 f-stop. Setting the exposure compensation to -1/3 or -2/3 can eliminate overexposed highlights. In Program mode, press the up arrow and set the slider. Manual Exposure -- The A495 does not have a manual exposure setting, it has only full automatic exposure. In some situations, this can allow the shutter speed to get too slow for aerial shots. Enhancing the camera firmware with CHDK adds a shutter priority exposure mode. This will keep the shutter speed constant while adjusting aperture to set exposure. Continuous mode -- Most Powershots can be operated with the exposure (shutter speed and f/stop) and focus locked if the shutter button is held down continuously and the camera is in "Continuous" shutter mode (press "FUNC. SET"). The camera uses its automatic systems to set the focus, shutter speed, and f/stop for the first photo, and then uses the same settings for all subsequent photos until the shutter button is released. It can be tricky to make sure that the first photo is taken while the camera is pointed at a scene similar to the aerial scenes you want to capture. It is not possible to choose which settings to use, so the camera may choose a shutter speed too slow for aerial photography. It is possible to stop continuous mode and check the settings for the first photos taken ( in review mode press "Menu," "Info Display," "Detailed") but then you have to start the camera shooting again with no guarantee that the settings will be the same. Battery Saving Features
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9 | cfastie |
May 02, 2012 19:20
| over 12 years ago
Some configuration ideas for using the A495 for aerial photosThe Canon Powershot A495 is the camera model of the PLOTS visible/IR camera tool Personal preferences vary, but the choices below have worked well during mapping flights. In some situations, setting the camera on full automatic mode can produce good results, and starting in auto mode is a good idea. Most of the suggestions below are for fine-tuning the quality of mapping photos. Refer to them if automatic settings are producing blurry, dark, or grainy photos. For better quality maps, manual settings are often preferred over automatic settings so each photo has similar qualities and will stitch together more seamlessly into a map. The biggest exception is exposure, which is a challenge to set correctly before launch, and may need to change during a flight. These suggestions are for the Powershot A495, but also apply to many similar Powershots. Program Mode -- To enter Program mode, which allows manual control of the features below, press the lower left button on the camera back and select "P." Daylight White Balance -- When the camera is in Program mode, select the "sun" icon for daylight white balance (Press "Menu"). This will make color balance consistent, whereas automatic white balance (AWB) allows color balance to vary among photos. Some testing is needed to determine if other white balance settings (cloudy, tungsten, etc) give better results with the IR camera even in sunlight. ISO (sensitivity to light) -- In Auto mode, ISO can vary among photos making some more noisy than others. On sunny days, ISO 80 (the "slowest" sensitivity to light) should produce the crispest images. On darker days, setting the ISO higher (100-200) will allow faster shutter speeds (less motion blur), but the images will be noisier (grainier). ISO settings higher than 200 are not recommended because the images will be rather noisy, but in dim light this may be the only option. The IR modified A495 needs several "stops" more light (compared to the unmodified A495) to make an exposure, so high ISO settings will probably be routine even in bright sunlight. In Program mode, press "Func. Set" to set ISO manually. Manual Focus -- In Program mode, the A495 can be set on "Infinity" focus mode. For most mapping flights, everything will be in focus if the camera is focused on infinity. In Program mode, press the left side of the rocker button for focus options. Additional information is needed to confirm how this "infinity" mode works. In some cameras, the focus does not stay locked on infinity. Infinity mode might be an automatic focus mode that never tries to focus closer than about 10 feet away. Image Stabilization -- The A495 does not have image stabilization. That's okay because it probably does not help on balloon or kite flights. Exposure Compensation -- On sunny days, the view from above is bright, and the automatic exposure system can be fooled. The A495 can compensate for such scenes by reducing the automatically chosen exposure in increments of 1/3 f-stop. Setting the exposure compensation to -1/3 or -2/3 can eliminate overexposed highlights. In Program mode, press the up arrow and set the slider. Manual Exposure -- The A495 does not allow setting exposure manually, it has only full automatic exposure. In some situations, this can allow the shutter speed to get too slow for aerial shots. Enhancing the camera firmware with CHDK adds a shutter priority exposure mode. This will keep the shutter speed constant while adjusting aperture to set exposure. Battery Saving Features
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Revert | |
8 | cfastie |
April 27, 2012 13:58
| over 12 years ago
Some configuration ideas for using the A495 for aerial photosThe Canon Powershot A495 is the camera model of the PLOTS visible/IR camera tool Personal preferences vary, but the choices below have worked well during mapping flights. In some situations, setting the camera on full automatic mode can produce good results, and starting in auto mode is a good idea. But for better quality maps, manual settings are often preferred over automatic settings so each photo has similar qualities and will stitch together more seamlessly into a map. The biggest exception is exposure, which is a challenge to set correctly before launch, and may need to change during a flight. Program Mode -- To enter Program mode, which allows manual control of the features below, press the lower left button on the camera back and select "P." Daylight White Balance -- When the camera is in Program mode, select the "sun" icon for daylight white balance (Press "Menu"). This will make color balance consistent, whereas automatic white balance (AWB) allows color balance to vary among photos. ISO (sensitivity to light) -- In Auto mode, ISO can vary among photos making some more noisy than others. On sunny days, ISO 80 (the "slowest" sensitivity to light) should produce the crispest images. On darker days, setting the ISO higher (100-200) will allow faster shutter speeds (less motion blur), but the images will be noisier (grainier). ISO settings higher than 200 are not recommended because the images will be rather noisy, but in dim light this may be the only option. In Program mode, press "Func. Set" to set ISO manually. Manual Focus -- In Program mode, the A495 can be set on "Infinity" focus mode. For most mapping flights, everything will be in focus if the camera is focused on infinity. In Program mode, press the left side of the rocker button for focus options. Additional information is needed to confirm how this "infinity" mode works. In some cameras, the focus does not stay locked on infinity. Image Stabilization -- The A495 does not have image stabilization. That's okay because it probably does not help on balloon or kite flights. Exposure Compensation -- On sunny days, the view from above is bright, and the automatic exposure system can be fooled. The A495 can compensate for such scenes by reducing the automatically chosen exposure in increments of 1/3 f-stop. Setting the exposure compensation to -1/3 or -2/3 can eliminate overexposed highlights. In Program mode, press the up arrow and set the slider. Manual Exposure -- The A495 has only a full automatic exposure mode. In some situations, this can allow the shutter speed to be set too slow for aerial shots. Enhancing the camera firmware with CHDK adds a shutter priority exposure mode. This will keep the shutter speed constant while adjusting aperture to set exposure. Battery Saving Features
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7 | cfastie |
April 27, 2012 13:56
| over 12 years ago
Some configuration ideas for using the A495 for aerial photosThe Canon Powershot A495 is the camera model of the PLOTS visible/IR camera tool Personal preferences vary, but the choices below have worked well during mapping flights. In some situations, setting the camera on full automatic mode can produce good results, and starting in auto mode is a good idea. But for better quality maps, manual settings are often preferred over automatic settings so each photo has similar qualities and will stitch together more seamlessly into a map. The biggest exception is exposure, which is a challenge to set correctly before launch, and may need to change during a flight. Program Mode -- To enter Program mode, which allows manual control of the features below, press the lower left button on the camera back and select "P." Daylight White Balance -- When the camera is in Program mode, select the "sun" icon for daylight white balance (Press "Menu"). This will make color balance consistent, whereas automatic white balance (AWB) allows color balance to vary among photos. ISO (sensitivity to light) -- In Auto mode, ISO can vary among photos making some more noisy than others. On sunny days, ISO 80 (the "slowest" sensitivity to light) should produce the crispest images. On darker days, setting the ISO higher (100-200) will allow faster shutter speeds (less motion blur), but the images will be noisier (grainier). ISO settings higher than 200 are not recommended because the images will be rather noisy, but in dim light this may be the only option. In Program mode, press "Func. Set" to set ISO manually. Manual Focus -- In Program mode, the A495 can be set on "Infinity" focus mode. For most mapping flights, everything will be in focus if the camera is focused on infinity. In Program mode, press the left side of the rocker button for focus options. Additional information is needed to confirm how this "infinity" mode works. In some cameras, the focus does not stay locked on infinity. Image Stabilization -- The A495 does not have image stabilization. That's okay because it probably does not help on balloon or kite flights. Exposure Compensation -- On sunny days, the view from above is bright, and the automatic exposure system can be fooled. The A495 can compensate for such scenes by reducing the automatically chosen exposure in increments of 1/3 f-stop. Setting the exposure compensation to -1/3 or -2/3 can eliminate overexposed highlights. In Program mode, press the up arrow and set the slider. Manual Exposure -- The A495 has only a full automatic exposure mode. In some situations, this can allow the shutter speed to be set too slow for aerial shots. Enhancing the camera firmware with CHDK adds a shutter priority exposure mode. This will keep the shutter speed constant while adjusting aperture to set exposure. Battery Saving Features
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Revert | |
6 | cfastie |
April 26, 2012 01:23
| over 12 years ago
Some configuration ideas for using the A495 for aerial photosThe Canon Powershot A495 is the camera model of the PLOTS visible/IR camera tool Personal preferences vary, but these choices have worked well during mapping flights. In some situations, setting the camera on full automatic mode can produce good results. But in general, manual settings are preferred over automatic settings so each photo has similar qualities and will stitch together more seamlessly into a map. The exception is exposure, which is a challenge to set correctly before launch, and may need to change during a flight. Manual Focus -- the A495 can be set on "infinity" focus mode. The camera has to be in "Manual" mode for this option to appear (have to confirm this). For most mapping flights, everything will be in focus if the camera is focused on infinity. Additional information is needed to confirm how this "infinity" mode works. In some cameras, the focus does not stay locked on infinity. Daylight White Balance -- When the camera is in "Manual" mode, select the "sun" icon for daylight white balance. This will make color balance consistent, whereas automatic white balance (AWB) allows color balance to vary among photos. Image Stabilization -- The A495 does not have image stabilization. That's okay because it probably does not help on balloon or kite flights. Exposure Compensation -- On sunny days, the view from above is bright, and the automatic exposure system can be fooled. The A495 can compensate for such scenes by reducing the exposure in increments of 1/3 f-stop. Setting the Exposure Compensation to -1/3 or -2/3 can eliminate overexposed highlights. ISO -- On sunny days, ISO 80 (the "slowest" sensitivity to light) should produce the crispest images. On darker days, setting the ISO higher (100-200) will allow faster shutter speeds (less motion blur), but the images will be noisier (grainier). ISO settings higher than 200 are not recommended because the images will be rather noisy, but in dim light this may be the only option. In auto ISO mode, ISO can vary among photos making some more noisy than others. Manual Exposure -- The A495 has only a full automatic exposure mode. In some situations, this can allow the shutter speed to be set too slow for aerial shots. Enhancing the camera firmware with CHDK adds a shutter priority exposure mode. Battery Saving Features -- (must confirm with the A495)
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5 | cfastie |
April 25, 2012 16:49
| over 12 years ago
Some configuration ideasfor using the Canon Powershot A495 for aerial photos Personal preferences vary, but these choices have worked well during mapping flights. In general, manual settings are preferred over automatic settings so each photo has similar qualities and will stitch together well. The exception is exposure, which is a challenge to set correctly before launch, and may need to change during a flight. Manual Focus -- the A495 can be set on "infinity" focus mode. The camera has to be in "Manual" mode for this option to appear (have to confirm this). For most mapping flights, everything will be in focus if the camera is focused on infinity. Some additional information is needed to confirm how this "infinity" mode works. Daylight White Balance -- When the camera is in "Manual" mode, select the sun icon for daylight white balance. Image Stabilization -- The A495 does not have image stabilization. That's okay because it probably does not help on balloon or kite flights. Exposure Compensation -- On sunny days, the view from above is bright, and the automatic exposure system can be fooled. The A495 can compensate for such scenes by reducing the exposure in increments of 1/3 f-stop. Setting the Exposure Compensation to -1/3 or -2/3 can eliminate overexposed highlights. ISO -- On sunny days, ISO 80 (the "slowest" sensitivity to light) should produce the crispest images. On darker days, setting the ISO higher (100-200) will allow faster shutter speeds (less motion blur), but the images will be noisier (grainy). ISO settings higher than 200 are not recommended because the images will be rather noisy, but in dim light this may be the only option. Battery Saving Features -- (must confirm with the A495)
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4 | warren |
April 25, 2012 16:06
| over 12 years ago
Some configuration ideasFor using the Canon Powershot A495 camera's normal menu settings Personal preferences vary, but these choices have worked well during mapping flights. In general, manual settings are preferred over automatic settings so each photo has similar qualities and will stitch together well. The exception is exposure, which is a challenge to set correctly before launch, and may need to change during a flight. Manual Focus -- the A495 can be set on "infinity" focus mode. The camera has to be in "Manual" mode for this option to appear (have to confirm this). For most mapping flights, everything will be in focus if the camera is focused on infinity. Some additional information is needed to confirm how this "infinity" mode works. Daylight White Balance -- When the camera is in "Manual" mode, select the sun icon for daylight white balance. Image Stabilization -- The A495 does not have image stabilization. That's okay because it probably does not help on balloon or kite flights. Exposure Compensation -- On sunny days, the view from above is bright, and the automatic exposure system can be fooled. The A495 can compensate for such scenes by reducing the exposure in increments of 1/3 f-stop. Setting the Exposure Compensation to -1/3 or -2/3 can eliminate overexposed highlights. ISO -- On sunny days, ISO 80 (the "slowest" sensitivity to light) should produce the crispest images. On darker days, setting the ISO higher (100-200) will allow faster shutter speeds (less motion blur), but the images will be noisier (grainy). ISO settings higher than 200 are not recommended because the images will be rather noisy, but in dim light this may be the only option. Battery Saving Features -- (must confirm with the A495)
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3 | warren |
April 25, 2012 16:05
| over 12 years ago
Some configuration ideasFor using the Canon Powershot A495 camera's normal menu settings Personal preferences vary, but these choices have worked well during mapping flights. In general, manual settings are preferred over automatic settings so each photo has similar qualities and will stitch together well. The exception is exposure, which is a challenge to set correctly before launch, and may need to change during a flight. Manual Focus -- the A495 can be set on "infinity" focus mode. The camera has to be in "Manual" mode for this option to appear (have to confirm this). For most mapping flights, everything will be in focus if the camera is focused on infinity. Some additional information is needed to confirm how this "infinity" mode works. Daylight White Balance -- When the camera is in "Manual" mode, select the sun icon for daylight white balance. Image Stabilization -- The A495 does not have image stabilization. That's okay because it probably does not help on balloon or kite flights. Exposure Compensation -- On sunny days, the view from above is bright, and the automatic exposure system can be fooled. The A495 can compensate for such scenes by reducing the exposure in increments of 1/3 f-stop. Setting the Exposure Compensation to -1/3 or -2/3 can eliminate overexposed highlights. ISO -- On sunny days, ISO 80 (the "slowest" sensitivity to light) should produce the crispest images. On darker days, setting the ISO higher (100-200) will allow faster shutter speeds (less motion blur), but the images will be noisier (grainy). ISO settings higher than 200 are not recommended because the images will be rather noisy, but in dim light this may be the only option. Battery Saving Features -- (must confirm with the A495)
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2 | warren |
April 25, 2012 16:04
| over 12 years ago
Some configuration ideasFor using the Canon Powershot A495 camera's normal menu settings Personal preferences vary, but these choices have worked well during mapping flights. In general, manual settings are preferred over automatic settings so each photo has similar qualities and will stitch together well. The exception is exposure, which is a challenge to set correctly before launch, and may need to change during a flight. Manual Focus -- the A495 can be set on "infinity" focus mode. The camera has to be in "Manual" mode for this option to appear (have to confirm this). For most mapping flights, everything will be in focus if the camera is focused on infinity. Some additional information is needed to confirm how this "infinity" mode works. Daylight White Balance -- When the camera is in "Manual" mode, select the sun icon for daylight white balance. Image Stabilization -- The A495 does not have image stabilization. That's okay because it probably does not help on balloon or kite flights. Exposure Compensation -- On sunny days, the view from above is bright, and the automatic exposure system can be fooled. The A495 can compensate for such scenes by reducing the exposure in increments of 1/3 f-stop. Setting the Exposure Compensation to -1/3 or -2/3 can eliminate overexposed highlights. ISO -- On sunny days, ISO 80 (the "slowest" sensitivity to light) should produce the crispest images. On darker days, setting the ISO higher (100-200) will allow faster shutter speeds (less motion blur), but the images will be noisier (grainy). ISO settings higher than 200 are not recommended because the images will be rather noisy, but in dim light this may be the only option. Battery Saving Features -- (must confirm with the A495)
This is a test of embedding an image with caption: So I guess that didn't work. |
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1 | warren |
April 25, 2012 16:01
| over 12 years ago
Some configuration ideasFor using the Canon Powershot A495 camera's normal menu settings Personal preferences vary, but these choices have worked well during mapping flights. In general, manual settings are preferred over automatic settings so each photo has similar qualities and will stitch together well. The exception is exposure, which is a challenge to set correctly before launch, and may need to change during a flight. Manual Focus -- the A495 can be set on "infinity" focus mode. The camera has to be in "Manual" mode for this option to appear (have to confirm this). For most mapping flights, everything will be in focus if the camera is focused on infinity. Some additional information is needed to confirm how this "infinity" mode works. Daylight White Balance -- When the camera is in "Manual" mode, select the sun icon for daylight white balance. Image Stabilization -- The A495 does not have image stabilization. That's okay because it probably does not help on balloon or kite flights. Exposure Compensation -- On sunny days, the view from above is bright, and the automatic exposure system can be fooled. The A495 can compensate for such scenes by reducing the exposure in increments of 1/3 f-stop. Setting the Exposure Compensation to -1/3 or -2/3 can eliminate overexposed highlights. ISO -- On sunny days, ISO 80 (the "slowest" sensitivity to light) should produce the crispest images. On darker days, setting the ISO higher (100-200) will allow faster shutter speeds (less motion blur), but the images will be noisier (grainy). ISO settings higher than 200 are not recommended because the images will be rather noisy, but in dim light this may be the only option. Battery Saving Features -- (must confirm with the A495)
This is a test of embedding an image with caption: [caption align="alignleft" width="300" caption="Grass fire along the Lemon Fair River, April 18, 2012. Photo by Preston Turner."] So I guess that didn't work. |
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0 | cfastie |
April 25, 2012 15:03
| over 12 years ago
Some configuration ideasFor using the Canon Powershot A495 camera's normal menu settings Personal preferences vary, but these choices have worked well during mapping flights. In general, manual settings are preferred over automatic settings so each photo has similar qualities and will stitch together well. The exception is exposure, which is a challenge to set correctly before launch, and may need to change during a flight. Manual Focus -- the A495 can be set on "infinity" focus mode. The camera has to be in "Manual" mode for this option to appear (have to confirm this). For most mapping flights, everything will be in focus if the camera is focused on infinity. Some additional information is needed to confirm how this "infinity" mode works. Daylight White Balance -- When the camera is in "Manual" mode, select the sun icon for daylight white balance. Image Stabilization -- The A495 does not have image stabilization. That's okay because it probably does not help on balloon or kite flights. Exposure Compensation -- On sunny days, the view from above is bright, and the automatic exposure system can be fooled. The A495 can compensate for such scenes by reducing the exposure in increments of 1/3 f-stop. Setting the Exposure Compensation to -1/3 or -2/3 can eliminate overexposed highlights. ISO -- On sunny days, ISO 80 (the "slowest" sensitivity to light) should produce the crispest images. On darker days, setting the ISO higher (100-200) will allow faster shutter speeds (less motion blur), but the images will be noisier (grainy). ISO settings higher than 200 are not recommended because the images will be rather noisy, but in dim light this may be the only option. Battery Saving Features -- (must confirm with the A495)
This is a test of embedding an image with caption:
[caption align="alignleft" width="300" caption="Grass fire along the Lemon Fair River, April 18, 2012. Photo by Preston Turner."] So I guess that didn't work. |
Revert |