GFX auto focus bracket step size

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JimKasson Forum Pro • Posts: 28,913
GFX auto focus bracket step size

There's a new mode in the firmware released today for the GFX 50S, 50R, and 100: auto focus bracketing. You set the near distance, the far distance, and the interval, and the camera bangs away between those focal points.

But what does it use for a step size?

Using a GFX 50R and the 23mm f/4 lens, I counted the number of exposures the camera made to go from 1 meter to infinity in auto mode, and manual mode with step sizes of 10, 5, and 2. The results:

So, the answer to the question is, the GFX chooses a step size of about 5 in auto mode. That gives a worst case CoC of 5 um within the stack, which should be fine for all but the most critical work.


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