Black corners in photos (not vignette)

[Scott Whaley]

I was going to say that it sounds like the OP is using a macro lens. Some one beat me to it.

 

[Ysarex]

Couple of things to address here, Is there an adapter being used? Has the lens been dropped or abused? Are you using a factory refub? Are you using a "canon" lens or alternative?

Or you could read the thread and find out the problem was solved.

Joe