Re: A thinner sensor stack may be possible after all!
Hi Rich,
Lloyd\'s test results with the 21 SEM performed really well. There is a vast difference between the A7rM and stock version with the 21 SEM. Yes there is some magenta cast, but with the A7rM it appears to be less than for the A7r stock at a given f stop. This is easily compensated within the Lr workflow, by taking shots at the different f stop with a WB discs and keeping this on file within Lr. This only has to be done once. Also you can use C1Pro which has the LCC for profile corrections. I still think the simplest is using Lr.
I am sorry I confused the discussion with the WATE From test results I have seen it has been suggested that the WATE best performs at 16mm with the M240. I cannot confirm this as I had already sold my M240. This does make sense, and I suspect the wider angle at 16mm may be causing more issues with the A7r and less at 21mm. I am hoping this will improve with the A7rM and perform better at all lengths. With regards to the magenta cast, I have had no need to compensate to date, so should improve with the A7rM. The only time I see a very slight cast is with bright side lighting. This I also had with the M240 and M9.
I have no intent acquiring the 21 SEM again, as I have just sold it! The WATE is so much more versatile, and I can use it on the A7II, A7s and A7rM.
The other lens I am hoping that will work really well is the 50 Lux Asph. This a great lens, and hopefully Lloyd\'s test results with the 50 Cron APO will translate to the 50 Lux Asph.
No doubt we will see Charlie\'s results very soon
Jan 29, 2015 at 12:12 AM
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