What I want to do
We'd struggled a year ago to get a CMOS-sensor based Canon SD4000IS working as an Infragram modified camera, so when @nedhorning, @mathew and @cfastie posted about the red filter Infragram technique, I was eager to see if that could get this excellent camera working. You can read more about Mathew and Chris's research here: http://publiclab.org/notes/mathew/04-30-2014/rosco-replacements-for-wratten-25a-pt-2
My attempt and results
My SD4000IS already had its infrared block filter removed, so I just taped a piece of Rosco Fire filter over the front. It seems to have worked very well! Much better differentiation than with a blue filter:
http://infragram.org/i/53e519b10ab503231b000c17 (lead image)
Questions and next steps
It'd be more ideal to test these in a grassy field, but these are encouraging!