Full Frame Vertical Shots

[Photofarmer]

Rf 70/200 2.8 on R5
Does auto focus struggle on the vertical and indeed fail at times.
Had issues at a horse show wasn’t noted on portrait

 

[Nick L]

I agree there are occasions when vertical AF does play up in the same way horizontal AF struggled on the R5 originally, I put it down to the lack of cross points (the 5d iii had) at the time, I see are back in the R1 but not the R5ii.

 

[Photofarmer]

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This one ok. Edit really had drama with eye focus today as well R5 seems to struggle when not so much contrast whereas R6ii rarely fails

 

[jcass]

Rf 70/200 2.8 on R5
Does auto focus struggle on the vertical and indeed fail at times.
Had issues at a horse show wasn’t noted on portrait

Do you mean holding the camera in portrait aspect instead of the normal landscape aspect?I believe that there are two factors that prefer holding the camera in the "standard" landscape aspect.

First is the physical layout of camera and buttons is designed for comfort in landscape. It is a contortion to hold the camera vertically for extended periods, and the heavier the combo the bigger the difference. A camera grip make a big difference here. Imo, for event shooting, a camera grip is a must regardless of battery life.

I need help on the second... I've read that the pixel layout in autofocus systems favors the landscape orientation in Canon's implementations. This may be the advantage of quad-point focus systems over dual-point. Even if I'm full of it on the reasons, I do believe that Canon's in-camera autofocus is technically better in landscape over portrait.

 

[Photofarmer]

I was looking for different perspective so tried portrait and noticed difference.
Rarely use it in such situations

 

[Achim_65]

My R6 also sometimes fails with vertical shots. The AF is identical to that of the R5.
I think this is because the R5 only has line sensors and not cross-type sensors that work in both orientations.
Since I also photograph horses and equestrian sports, I feel for you.

Interestingly, my R3 has virtually no problems with vertical photos.