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Old July 23rd, 2009, 09:04 AM
Bart_van_der_Wolf Bart_van_der_Wolf is offline
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Join Date: Jun 2006
Location: Netherlands
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Originally Posted by Juergen Koslowski View Post
Would you be able to determine, if the lens is suitable for infrared-photography? I realize that 82mm IR-filters are not so common.
Hi Juergen,

I don't have an IR filter in the correct size, but when I handhold a 58mm diameter Hoya R72 in front of the lens, I don't see an IR hotspot. I do see spots but those may be dust and light coming in around the filter edges. I think this lens behaves well, probably due to the improved coatings. The rear lens surface is pretty flat, so I think that a hotspot would already have been clearly visible.

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