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Lenses on mirrorless body need Focus calibration ?

Started 3 months ago | Discussions thread
Photato
OP Photato Veteran Member • Posts: 3,153
Re: Lenses on mirrorless body need Focus calibration ?

neilt3 wrote:

Is that an EF mount lens your using on an R body via an adapter?

It is a third party adapter Ykeasu, which has worked well with a Tokina EF lens, or other Canon EF lenses, no AF issues.

If so , which adapter?

You sometimes find using lenses via an adapter perform much better in AF-C mode than AF-S .

Did not know. But AF-C fdpepletes the battery faster and takes a toll on the focus motors over time when no needed.

Also , is the lens focussing with the aperture wide open , then stopping down on exposure?

If so , there could be some focus shift .

But that is how AF is supposed to work, it opens up temporarily then return to the set aperture when taking the shot, the focus plane should not change.

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