bg3
bg3


Author Comment Last activity Moderation
warren "@warren awards a barnstar to Claytonb for their awesome contribution! " | Read more » over 4 years ago
Claytonb "@Thorsten I have not tried using a chart like the color checker though I have used materials(plastic, felt, paper) in the shade of red on the chart..." | Read more » about 6 years ago
Thorsten "@Claytonb great work as usual! Two questions: Have you tried some reddish colors of calibration targets such as the ColorChecker? http://xriteph..." | Read more » about 6 years ago
cfastie "This is a great discovery. It will be good to learn how this color works with a red filter like Wratten 25. I will keep my eye out for Boom Chicka ..." | Read more » over 6 years ago
cfastie "Hi CHUMBA, I have never seen the inside of a Samsung camera, so I can't be of any help. There is probably a filter somewhere. Maybe it is glued to..." | Read more » about 7 years ago
CHUMBA "Hi @cfastie, I wonder if you know How take out the IR filter from a Samsung DV150-f, I have one, I broke it, and I did not find the IR filter anywa..." | Read more » about 7 years ago
Tbtouaki "Hi I had wrong white balance for my camera. Thanks everyone for the help. Sorry for the trouble If anyone has any idea on how to save pictures take..." | Read more » over 7 years ago
Tbtouaki "Hi I have tried several white balance options before, base on what I've read. On this pics the settings were exactly the same as the maxmax camera...." | Read more » over 7 years ago
cfastie "Hi Rita, Your photo above (NIR1_Red3_b.jpg) will not produce very good NDVI. Most of the pixels of plants have the same value in each of the three ..." | Read more » over 7 years ago
Tbtouaki "Hi I currently have a modified canon (IR block removed) with a wratten 25A Red filter. My pictures are really nice looking but I have big problems ..." | Read more » over 7 years ago
mathew "thank you for these conversion details and trying to get to the bottom of this problem. " | Read more » almost 8 years ago
patcoyle "Chris, excellent well documented tips. I appreciate your continuing effort to advance the quality of results from these tools. " | Read more » almost 8 years ago
cfastie "I think most small Powershots use an IR block filter that is 8.9 x 7.9 mm. That's the advertised size of the BG3 glass filter I put into an A2200 a..." | Read more » over 8 years ago
ttaylor "Chris, do you remember/know the dimensions of the A2200 hot filter? " | Read more » over 8 years ago
Tbtouaki "Hi I have several filters to put in front of the lenses and was considering which to put inside, to replace the IR filter. Thank you so much for ..." | Read more » almost 9 years ago
cfastie "Tbtouaki, It sounds like you have a full spectrum camera, one that has the IR blocking filter removed and nothing replacing it. By placing a filte..." | Read more » almost 9 years ago
Tbtouaki "How do you swap channels in an unmodified camera from RGB to NIR? What kind of camera are you using? I am really interested in this, I am photograp..." | Read more » almost 9 years ago
nedhorning "Hi Roolark - I don't have a spectral sensitivity curve for the A2200. I've been using LEDs to get a rough idea of spectral sensitivity but that's a..." | Read more » almost 9 years ago
Roolark "@Ned, do you already have a spectral sensitivity curve for the canon A2200, with its ir block filter removed (similar to the Nikon curve above)? If..." | Read more » almost 9 years ago
Roolark "@Cfastie, That post from Tom was the one I was referring to in my idea #2 but yeah, I must have misread it. Still, regarding #1, I do understand..." | Read more » almost 9 years ago
cfastie " Interesting idea. Some IR blocking filters are "hot mirrors" which are coated to reflect IR. Maybe it's possible to remove the coating (but maybe ..." | Read more » almost 9 years ago
Roolark "Couple quick thoughts on the filter/clarity issue. For starters, I just ordered an a2200 for the infra blue purposes from eBay, so I haven't had a ..." | Read more » almost 9 years ago
Dongjie "cfastie, yes, I am referring for that. Thanks for your information. :) " | Read more » about 9 years ago
cfastie "Dongjie, are you referring to the gigapans? They are gigapans embedded here from gigapan.com. " | Read more » about 9 years ago