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EXCERPT page containing first few paragraphs. 2023-12-06 16:38:21

Fujifilm GFX100

Fujifilm GFX100/GFX100S: Using the FOCUS BKT Feature for Focus Stacked Images

Translated into English, the FOCUS BKT feature of the Fujifillm GFX100/50S/50R means intelligent focus stepping from near to far for the purposes of focus stacking.

“Intelligent” means that the step size takes into account four factors: distance, shooting aperture, focal length, and user-choosable step size). Essentially, the camera computes how far apart the focus needs to be for each frame, given the aperture and focal length and distance.

Update 2021-05-09: the new Auto mode found in the Fujifilm GFX100S and latest firmware for the Fujifilm GFX100 works well, at least for close-range subjects.

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Fujifilm GFX 100 FOCUS BKT recommended settings for f/8

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