CV Ultron 28: Which lens detection setting?

hoffel

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12:03 PM
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Feb 16, 2010
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Hello all!

I have a CV Ultron 28/f2 lens (coded as a Summicron) on my Leica M8 with a Leica Infrared filter on it. With the lens detection setting on "on" I get not vignetting at all (not even at f2). When I switch it to "on + UV/IR" there is just a tiny bit of vignetting to be found (at f2).

My question now is: If I leave the setting on "on" without the UV/IR detection, will I get cyan drift in the corners?

(Forgive me if this question has been asked and answered already, but I can't seem to find the relevant thread...)

Regards,
Hoffel.
 
My question now is: If I leave the setting on "on" without the UV/IR detection, will I get cyan drift in the corners?

I've got the f/1.9 version and get no cyan drift or vignetting with UV/IR set to "ON" (which is left permanently in that position). But there seem to be some other performance differences between the lenses so YMMV.

Is there a reason you can't just try it and see?
 
Thanks for your reply! I just didn't want to run into any surprises. Can't test in daylight at the moment and there are very smart people in this forum...

Regards,
Hoffel.
 
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