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Message: <blockquote data-quote="crycocyon" data-source="post: 129221" data-attributes="member: 13076"><p>Very interesting exercise. Long ago I tried infra-red color film. The kind that gives red trees. Very challenging to work with (and focus with because the focus is shifted in IR). Yes the longer wavelengths provide less resolution than shorter ones. I think the softness is also in part from the focus shift. When I shot the color IR film, I used the red dot on the depth of field range. First I checked the focus on the barrel, then lined up that point with the red dot to compensate for the longer wavelengths (I was shooting on Minolta MD lenses at the time, but the AI-S lenses, for example, have the same red dot. What lens are you shooting with?</p></blockquote><p></p>