Actually Jim, the 21/3.5 may not be good for IR anyway?? The only example I\'ve seen shows a lot of smearing.
See: http://www.ayton.id.au/wp02/?p=4331 (Though he doesn\'t specify if his is SC or MC. I did email him about it a few years back, but I\'ve forgotten what his reply was! ) My MC version certainly isn\'t any good for IR, very \"clouded\" and unsharp.
You need to try it!
Aug 20, 2015 at 02:30 AM
Previous versions of timballic's message #13159094 « Infrared and alt lenses (on A7) »
) My MC version certainly isn\'t any good for IR, very \"clouded\" and unsharp.