Mon Feb 10, 2014 3:55 pm
Marc is mathematically correct, but under that way of thinking, a 5D mkiii does not have any different DOF than a 7D, and we all know that in practice that is not true. You would not compare a head and shoulders shot without a speedbooster to the same physical setup with a speedbooster that now includes most of the torso, you'd move the camera closer to the subject to make the same framing, and in that case, there would be a definite difference in depth of field between the two images.
So yes and no are both the right answer in this case.
Kyle Gordon
Professional Singer/Composer/Producer and Director/Editor/Colorist