Most people are aware that a larger sensor


1) gives a narrower dof


2) gives less noise at a given ISO


2 in effect makes our lenses expose faster. For example, if ISO 1000 on the 5DII has as much noise as ISO 400 on the 7D, then we can use a 2 1/2 times faster shutter speed with the 5DII while getting the same noise by using iso 1000 instead of iso 400. Thus 2 could be rewritten as


2') allows us to use higher shutter speeds while retaining the same amount of noise.


Most people are aware of 1) and 2) in a qualitative way. What most (except those on this forum) don't realize is that when you move to full frame, the amount by which the DOF decreases and shutter speed increases is exactly the same as if our lens f number was divided by the FOVCF.


In short, the answer is yes when it comes to DOF and fast exposure.


For close up shots (near 1x magnification), DOF does not follow this rule, but then, most of us stop down for macros anyway.