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Canon R3 Users: Are you experiencing (any) focusing issues? I am!

Started Jan 13, 2022 | Questions thread
MarshallG
MarshallG Veteran Member • Posts: 8,951
The Spot AF Problem
1

With both DSLR and ML, many users set up Spot or Single-Point AF without understanding the consequence.

The problem is that the AF system needs contrast along a line. It isn’t sonar. When you tell AF to use just a single spot, if there’s no contrast there, the camera can’t focus. It’s even worse on the R series cameras because they don’t have cross point autofocus. It’s better to set up a small cluster of focus points.

I don’t think this is the entirety of your problems, but it’s helpful to know.

 MarshallG's gear list:MarshallG's gear list
Canon EOS R5 Canon EF 50mm F1.4 USM Canon EF 85mm F1.8 USM Canon EF 16-35mm F2.8L II USM Canon Extender EF 1.4x II +4 more
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