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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
Re: The Spot AF Problem

Mike Engles wrote:

Chicken and egg situation,as if the contrast is low it cannot read what is there in the first place, to find a face or the nether end. That is why the best use is to if possible actually put the spot on the bit you want to focus on. Even if you do that the 'AI' will often run off and pick somewhere else, that is just 'contrasty'.

Realms of magic I call it.

No, it’s not the same. 
Even if you have plenty of light, if you tell the camera to only contrast detect a small spot where there’s no contrast, then you won’t get contrast. That’s why I said it’s usually best to choose a small cluster than a single spot.
If you intend to focus on a person’s face, then Eye AF is going to be best.  But if you’re taking photos of flowers or a car or the sunset or… whatever… then Eye AF won’t help.

 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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