I've been shooting more 4K lately and noticing that my Canon 17-55mm 2.8 lens is showing vignetting in the corners on the c200 and 300mk2. It's even worse if I disable the peripheral correction on the c300.
With the C200, I see they have an EF-S setting in the menu, but it's greyed out and I can figure out how to activate it. Would hate to have to stop using one of my favorite run-n-gun doc lenses!

With the C200, I see they have an EF-S setting in the menu, but it's greyed out and I can figure out how to activate it. Would hate to have to stop using one of my favorite run-n-gun doc lenses!
