Testing rf wide angles on the a7

I'm sure you must have seen this, but I think it is appropriate to post again in this thread, which might become a reference. Very soon, we will have a much larger data base from which to draw conclusions.

Quoted directly from LUF:
"I put my Zeiss ZM 21mm ƒ/2.8 on the A7r we have here [Luke works at Imaging-Resource —Ed.]. I'm sad to report that color shifts were severe and covered most of the frame. There was also severe darkening of the image away from the center, way too much to simply call vignetting. I chose this lens carefully, based on the experience of other users, to avoid this problem with my early NEX cameras."
 
Steve also wrote that when he had the prerelease copy in his hands that Sony didn't let him use a card. He won't be able to test lenses on it until he receives the camera after it is released.
 
I am guessing my f/4 superangulon would basically not produce acceptable images? It is reported to be unusable even with an M9, as it comes too close to the sensor.

Given that there are problems with the newer Leica 21mm ...

;-(

Randy
 
Does anyone know for certain

if the A7 and A7r have the same

or different micro prisms in the sensor ?

Stephen
 
I personally would like to c how the following lenses behave
- Leica
-- 24f2.8, 35f2, 40f2, 50f2, 90f2.8
- CV
-- 40f1.4 and 50f1.5
- Canon
-- 50f1.2
- Konica
-- 21/35 (dual - Konica answer to tri-elmar) and 50f2

Right now I am presuming that the lenses from 40mm on up should not be an issue.

My most used lens on the Ricoh gxr is the 35f2.. It is actually almost permanently on the camera. The 40 would be what I would use the most if I ever went back to ff..

Anyway, for me for legacy rf lenses, the gxr is what I use. My most used lenses on it are 24/35/50. W/ the 35 being as I said semi-permanent...

Gary
 
cpc said:
In the samples in the link above the 35/2.8 Biogon is one of the worst offenders.
The 35/1.2 Nokton on the other hand looks pretty usable.
Click to expand...

Bummer to hear...
I can't open the link from my phone atm.
Was the Zm Biogon 28 tested ?
 
f16sunshine said:
Bummer to hear...
I can't open the link from my phone atm.
Was the Zm Biogon 28 tested ?
Click to expand...

No, but the 28 Cron is there and doesn't look good: color shift + smearing. Same for the Contax G 28 (from another test). The ZM 28 is very similar to the G 28. The back element of the ZM stays a little bit further from the sensor (2mm or sth) but I wouldn't hold my breath.

The most surprising result is that most 50mm lenses (and even the 90mm Summarit) tested need to be closed down to f4 for border sharpness. The Planar ZM is the one exception.

Maybe the A7r will do a bit better due to the lack of AA filter.
 
Frank Petronio said:
Isn't Steve Huff like a sponsored Ken Rockwell on happy pills? Would you really trust their judgement on anything?
Click to expand...

No he is not.

Huff works his butt off to get out accurate gear information in a timely manner to people who want to KNOW the subject matter ASAP.

I do trust his judgement -- though of course he is no more perfect than anyone else. For instance Huff was the first that reviewer that I know of to point out the 7R's loud shutter.

He is not like you since I allowed you to return to RFF -- seemingly intent upon creating a dark cloud of worthless content.

Stephen
 
Could it be true that the new Sony camera cannot handle wide angles well? I would like to know.
 
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