A 45mm Oly lens on my GF1 gives me a FoV of a 90mm lens on a full frame camera. Now let's say I put a 90mm lens on a D700. I have the 45mm on the GF1. If I stand exactly 6 feet away from my subject and take a shot with both cameras. Will the subject appear closer in the D700 shot? I guess I'm asking is that do I need to put a 90mm on the GF1 to get the same magnification as the 90mm on the D700?