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You are here: Home / Lens screening testing / Examples / Good 85 mm FF lens

Good 85 mm FF lens

A reader sent me samples of the Sony 85 mm f/1.8 on the a7RIII. First, wide open:

f/1.8

And stopped down to f/2.8:

f/2.8

This is a fine lens. There’s some LoCA apparent in the center crops. The top right and top left corners of the wide open shot are a bit softer than the other two, but this is a really solid performance for a mid-priced f/1.8 lens wide open. The top corners crisp up nicely at f/2.8, showing strong aliasing in all nine crops.

Note that the top crops are darker than the bottom ones. That’s because the reader used EFCS with a very high shutter speed (1/6400 second in the f/1.8 crops), which is known to cause darkening of the tops of the images with the a7RIII.

Thee reader repeated the tests with EFCS turned off.

f/1.8

 

f/2.8

The dark shading at the top disappeared. Interestingly, the top left and top right images at f/1.8 got sharper. I’m not sure if this was related to the EFCS change or not.

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