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Jeff Kott wrote:
Yes, that was my conclusion. The largest I print is 16"x24" and I'm not sure you'd see much difference between them in a print that size.
Clearly, the CV 90/3.5 is a bargain if someone is looking for a small 90 for landscape use.
Also, I feel that any comments about the 90 Macro Elmar and CV 90 not performing well on modern sensors are a bad rap.
Nice little test The AA Cron clearly well ahead to me. CV last, without doubt. However it's one test, and we know tiny variations in focus can do things. It's too bad you did not have a 240 handy to shoot them all with the same scene on that body.
I don't hear anyone claiming certain lenses "don't perform well on modern sensors". What I hear is people saying some lenses are working differently on different sensor designs. This is way beyond speculation at this point.
What throws a wrench in the works is the variation, for example between the 50 cron v4, which is quite good on basically all Sonys, and the 50 Lux asph, which is not. We also know that there are multiple aspects of performance affected, especially background render, in the long lenses, by the various sensor designs.
Sony has quite a gamut of sensors though, and while there are differences between them with say, 75 lux, the big issues we see with a ZM 35/2 etc, are consistent. What do they have in common? We know, the thick stack.
That's just life. Optics matter. Both in the lens and in front of the sensor. My own criteria for a good body is simple: be as true to the lens design as possible. But that's only me, and there are lots of things to like about the A7r2, which is a fantastic camera, even if it struggles to be true to the best small lens line we have.
Henning wrote:
I have to qualify my remark about the 50's because I haven't tried all. I have 5 right now, from an old Nickel Elmar through to the 50/1.4 ASPH and a Noctilux f/1. The Noctilux doesn't matter since it's never sharp in the corners anyways, but the 50/1.4 is definitely better on the M240 than the A7Rii, as is the dual range Summicron. As for the 90's: I tested them to my satisfaction, and right now, since I don't have the 90AA anymore, I mostly use the 90 Elmarit-M and the pre-ASPH Summicron (which is of course not close to the 90AA in the corners at any reasonable aperture, but renders nicely). The 90/4 Elmar isn't at all bad on the A7Rii by any means; it just doesn't have the absolutely flat corner to corner performance that it has on the M240....Show more →
Does anyone really doubt this is true, in general, at this stage? The Sonys do seem to like the AA 90 quite a bit, but so often it's the biggest heaviest M glass the A7 likes best, 50 cron is exception, I agree.
What's useful and interesting is to see the same lens on a M sensor and the Sony sensor. We should draft Gary, as he has both, and quite a few do. Still going to be variables, be the more we see the better informed we become.
Sure we all have our preferences, but reality is in there somewhere 
Here is the CV 90/3.5 on the M9, shot shortly after I found the lens:

L1020030 by unoh7, on Flickr

L1020032 by unoh7, on Flickr
Both at f/8 (could be 5.6) and another:

Sun Valley by unoh7, on Flickr
Now, on a Stock, un-modified A7:

DSC08595 by unoh7, on Flickr

DSC08557 by unoh7, on Flickr
These could be at F/4.
Now M9 at F/3.5:

f/3.5 by unoh7, on Flickr
Frankly I would be shocked if the ME 90 did not kill this lens at F/4 on an M body. Those little trees at a mile or more tell performance pretty well, though focus is still a variable.
Here is better F/4 shot:

L1004739 by unoh7, on Flickr
and now the same CV90 "flat out" at 5.6 on m9:

L1004787 by unoh7, on Flickr
These two shots say to me: Charlie, your copy is fine.
Now, Summarit 90 WO on Stock A7:

DSC08449 by unoh7, on Flickr
The Summarit should also be a good benchmark to judge the CV 90 and ME 90 against. F/8 on the M9 now:

L1004481 by unoh7, on Flickr
Again the long distance and clear air bring out everything. Shorten the reach and the lens appears flawless:

L1004511 by unoh7, on Flickr
No single shot should be the basis for opinion. But many long shots will tell a story pretty clearly. Both the ME 90 ad CV 90, by reputation, should beat the Summarit at f/5.6 or 8. My impression is the Summarit beats the CV 90 always at the same aperture. Now, that may be mistaken 
Being wrong or trying to back up a feeling is good inspiration to shoot 
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