hey shooters, check this out:
 

It's all I use now. It's great for focusing and recomposing shots and saves from switching lens from auto to manual focus.

On action shots with AI-servo it works a treat too but I don't do a lot of that.

I've swapped the AF-ON and AE-lock buttons around as well because it's an easier configuration for my thumb placement.

Will try it directly.....

Really?! This is a no-brainer, I've been doing it ever since it became an option in custom settings 8 years ago. That is except for the last three years when I switched to manual lenses...

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nothing new in this video... although good for people not familiar with their camera.