Should the depth of field in the viewfinder be the same as the final images with the aperture set to wide open?
When I take pictures of flowers, I often try to get the classic soft background around the in focus flower. I have a canon t3i, and a lens that goes to f/2.8. I set that to wide open, take my ...
I have a Nikon D3100, and I am borrowing an old Nikkor 50mm SLR lens (http://www.destoutz.ch/lens_50mm_f1.8_1828564.html). I've had a lot of trouble with that lens, in that pictures that appear ...
what is the mechanical explanations as to why some cameras can take good bokeh and not others. do lenses have a role too?