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| p.1 #4 · Infra-red Compatible Lenses |
FYI, here's another list that may be useful:
Interesting list - I can confirm some of the lens-specific IR performances there, but disagree in regard of the Sigma 10-20 mm lens. It unfortunately often produced a hot spot even at wider open apertures. Sometimes I was able to limit the spot by changing the camera-sun angle, sometimes the spot appeared no matter what. I use a 77 mm Hoya IR filter on top of the lens on my older Rebel XT camera.
For now, I tested some of my lenses in IR photography just by trial and error. The 17-40, as well as the 24-70 and 70-200 f4 lenses were all fine without hot spots, even at f8-f11.