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p.2 #9 · p.2 #9 · Latest feedback on M lenses for Sony A7/A7r | |
rscheffler wrote:
I did an infinity comparison between the a7R and M9 with over 20 rangefinder lenses and posted it on my site: http://www.ronscheffler.com/techtalk/?p=251
Lenses included:
CV12, CV15, ZM18, 21 Lux, ZM21/2.8, 21 SEM, ZM25, 28 Cron, CV35/1.2 II, Canon 35/2 LTM, ZM35/2, ZM35/2.8, FE35/2.8, CV40/1.4, 50 Lux ASPH, Canon 50/1.4 LTM, CV50/1.5 LTM, ZM50/1.5, ZM50/2, FE55/1.8, CV75/1.8, ZM85/4, 90 Summarit.
There are links to high-rez files for each lens on each camera from wide open through f/11. Because I was primarily interested in how the degree of edge performance differed on the Sony from the M9, I resized the a7R files to M9 dimensions.
Generally, performance into the edges was better on the M9 than the a7R with virtually every rangefinder lens (though the FE55 was pretty impressive and probably the best of the bunch - though obviously not a rangefinder lens). Those that I thought were not bad on the a7R include the CV12 and 15 (both have fairly strong color shift), 21 Lux, CV35/1.2 II, ZM50/2 and the teles.
My conclusion for now is that to get the best out of higher end rangefinder lenses, they're best used on a Leica digital body. And that the Sony system will probably work best with native lenses as they become available, or adapted SLR lenses....Show more →
Ron, thank you for your extensive write up on rangefinder lenses on Sony & Leica M9 cameras.
According to your review "Some lenses tested on the M9 were not 6-bit coded. If correction was not applied (and therefore embedded in the DNGs), it’s sometimes indicated in the watermark." which implies that number of test images taken with Leica lenses on M9 were in-camera corrected then based on lens' profiles further corrected in LR (lens profiles) where on other hand the same lenses were totally uncorrected when used on Sony A7R and further Sony settings had all lens correction disabled and Sony images were down-sampled to Leica M9 resolution. Is this correct or I misread some parts of your review?
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