Originally Posted by
MarkChap
But do you really ??
NO, the aperture of a lens does not change, it is a physical property of the lens and nothing to do with the recording medium used behind the lens
No, moving away from your subject increases DoF, as you get closer to your subject you shrink your DoF
Buying a 50mm lens is like buying a 50mm lens end of story. It is not like buying an 85mm lens for a film camera. The lens dynamics don't change ONLY the field of view changes
On your canon you will have the same field of view as an 85mm lens (or there abouts) but a 50mm lens will ALWAYS be a 50mm lens