Today I finally received my 28mm Summicron Asph II from Wetzlar.
I did a quick vignetting comparison and unsurprisingly the Ultron II vignettes considerably more wide open than the 'cron. The Ultron II still vignettes more @ f/2.8, but @ f/4 and f/5.6 the Ultron II vignettes less!!!
Another thing this test shows is that the Ultron II seems more even across the frame in terms of color tint. In other words, the Ultron II has less "Italian flag" issue than the Summicron.
All the above is on my ultra-thin sensor glass modded Nikon Z6. Results on Leica M cameras might be different.
Aug 09, 2021 at 08:09 AM
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