I accidentally dropped my Canon EF 24-70 2.8 L USM. How do I check it properly?
I accidentally dropped my Canon EF 24-70 2.8 L USM. How do I check it properly? I was changing my lens and i accidentally left my backpack unzipped, on a chair (about knee level). I changed the 24-70 with my 70-200 and left it inside the backpack. When i came back, i took my backpack and the 24-70 rolled off. It fell on the floor (wooden floor). There are no visible issues, the focus works both manual and auto, the aperture...