Thanks Meta--that we know, but the thing we're discussing has to do with 'perceived' DOF in digital is different that 'actual' as compared to SLR cameras. Also--you don't ever get that really blurry background unless you use very macro lens with widest open aperature. Mine, on my digital Canon is 2.0. Alpha's is probably more since he has the 'fauncy' Nikon D1 LOL.