This is how Canon shooters got autofocus 40 years ago and it still works today - DIY Photography

Canon might have the edge in autofocus today, with dual-pixel AF (and quad-pixel rumoured to be on the way… eventually) and possibly even beating out Sony’s Eye AF face detection. They’re even bringing back the Eye Controlled Autofocus System for the EOS R3. But back in the early 80s, autofocus wasn’t something you really heard […]