Canon Community

Canon EF 24-70 L fails to autofocus at 70mm.5D MkIV body.Not the same problem as losing focus at different focal lengths, which is well documented here.With the lens set to AF, lens will focus at all focal lengths until I turn to the maximum magnific...

Where is the firmware for 5D MkIV?

I want to shoot tethered when my MkIV is on the back of my telescope. I figured out how to use Utility 3 for tethered shooting; is that the best way? I read here someone says I should be using DPP; but to see Live View it opens up the same 2 windows ...