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Manual focusing with a camera dial - canon R7


Hello, I am using a canon R7 with a canon RF 35mm F1.8 Macro IS STM for underwater photography. However, with my housing I can't do manual focus because I can't touch the lens focus ring nor the touch screen to choose where to focus as well. I was wondering if it would be possible to assign one of the 3 camera dials to work like a focus ring, but can't find any info about it online. Has anyone done this before? Thank you!



I've checked the settings and it is not possible to use one of the three dials to adjust focus. 

If your housing gives a button for the AF point selection button, then it is possible to move the AF point location by pressing the AF-selection button then turning the main and quick controls dials. Main dial moves the AF point left/right and the quick control dial will move it up/down. 

Brian - Canon specialist trainer, author and photographer
I use British not American English, so my spellings may be a little different to yours

That works! Thank you much!