This post is part of a series looking at on-sensor phase-detect autofocus, the whole autofocus system, and why mirrorless autofocus might still need some calibration. I’ve used information from the Camera Database at FoC a l IQ (April 2023 data) for this information.
I’ll link back to the previous posts at various places – there’s a lot of information in them.įirst, we’ll take a look at some empirical evidence gathered from FoCal user results uploads which show the sort of focus adjustment required for cameras. This is the culmination of a series of posts about how the whole autofocus system works and what issues might still lead to a requirement to calibrate lenses even though the autofocus measurements are now obtained from the same sensor as the image is captured from.
