Well, I have Choppy and a WATE and did some tests yesterday with the TechArt Pro LM-EA7 adapter. Of course, I am aware that AF introduces new variables into the comparison. However, I can also use the adapter in manual mode and replace the AF variability with that of my aging eyes.
The comparison I did yesterday reminded me of the comparisons hiepphotog and I did of many rangefinder lenses, including my WATE, on my stock A7r2 and a Kolari modified version 2 with thinner sensor cover glass, let\'s refer to that as A7r2.mod2.
We got the best corner performance of the WATE with the A7r2.mod2. The disadvantage of the A7r2.mod2 is that it can lead to inferior performance with native WA FE lenses. The thicker sensor cover glass of the stock A7r2 is also the reason the WATE has to be stopped down to f/8 before its extreme corner performance catches up to that of Choppy. Choppy doesn\'t exhibit that feature. Its extreme corner performance is excellent from f/4.5 on and, if at all, only improves insignificantly at f/8 aside from DoF gain, whereas my WATE improved its extreme corner performance significantly.
I want to repeat my adapter comparisons more carefully before I go into details.
K-H.
May 10, 2016 at 08:50 AM
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