Apparent crop marks on display screen that I can't get rid of - anyone know what these are?
I guess so. Before the forum was reset, jprusa hat a quote from Canon here that said only select RF and EF lenses had 100 % coverage.It definitely varies depending on the lens. With my 70-200 2.8(ef) it is top to bottom but not quite all the way from side to side. With my sigma 150-600 5.6-6.3 it is less in both directions. I would assume you get 100% with a 1.2 lens or something like it.
I guess that means the OP's 24-105 4.0L is not one of those select ones either.
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