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Re: [OM] A7RII for Zuikos

Subject: Re: [OM] A7RII for Zuikos
From: Ken Norton <ken@xxxxxxxxxxx>
Date: Wed, 19 Aug 2015 16:02:33 -0500
> The sensor still doesn't play well with RF WA's  despite back-sided 
> illumination (should be better with divergent rays)  and likely some effect 
> like on the A7R  even with WA SLR film lenses.  Unclear if Kolari will be 
> able to modify the sensor stack or if it is worth doing.

It appears that there is some aperture-based sensitivity, as well as
rear-node to sensor distance issues involved. Going back to the
ancient Olympus E-1, the filter stack was horribly thick and you had
some fall-off, but it was quite well-behaved. I'm not sure if what we
are seeing with the Sony is a fair representation because we're
pixel-peeping beyond what should be a reasonable point.

I know it's a little odd, but I'm not having any issues with the A7RIIITi.


-- 
Ken Norton
ken@xxxxxxxxxxx
http://www.zone-10.com
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