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Sony G Master 85mm f/1.4 Focus Accuracy on Sony A7R II with Firmware 3.1

Get Sony G Master Lens at B&H Photo.

Sony 85mm f/1.4 GM

A few days ago, I showed focus error with the Sony 85mm f/1.4 GM on the Sony A7R II. That was with firmware 3.0, with version 3.1 recommended with the 85/1.4 GM.

But it seems the firmware version has nothing to do with problematic performance.

Using the Sony A7R II with the very latest firmware (version 3.1), I put focusing to the test under controlled conditions in which every effort was made to help the camera succeed.

Focus Accuracy at f/1.4 and f/4, Controlled Conditions (Dolls)

Shot at two different distances and at both f/1.4 and f/4 to confirm the findings.

I prefer my images as sharp as the lens can deliver, which is why I do all my evaluation work with manual focus whenever feasible, which is almost always.

So we can forgive some error at f/1.4 (but on mirrorless?!), but what about f/4 too?

Comparing autofocus and manual focus


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