24-70 GM corners quality

Started Dec 21, 2017 | Questions thread
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Mais78 Senior Member • Posts: 1,229
24-70 GM corners quality

Getting to know the A7RIII and 24-70 GM.

The corners of this lens are quite impressive stopped down, see top right and bottom left corners of first pic at f7.1

At f2.8 (picture 2 and 3) of course the corners are not as good but still ok for a zoom. What I noticed is that bottom left corner is somehow softer than the top right. I think softness is more evident at shorter distances than these.

Am I asking too much from a zoom for the 4 corners to be exactly equally sharp? Is this a good copy compared to what is available out there?

Thanks

PS Yes, I know this is not a lab test..

 Mais78's gear list:Mais78's gear list
Olympus OM-D E-M5 Sony a7R III Olympus M.Zuiko Digital 45mm F1.8 Panasonic 20mm F1.7 II Panasonic Lumix G Vario HD 12-32mm F3.5-5.6 Mega OIS +2 more
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Sony FE 24-70mm F2.8 GM
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