I used a Canon Celluloid SLR for over 15 years, then went to standard digital for another five years.. now I'm finally moving over to Digital SLR with the camera mentioned above. I'm looking for comments on the following; With celluloid film, going to 1000 ASA film meant faster shutter-speeds at the expense of a coarser grain. With the digital SLR, does the CMOS maintain the high resolution at the simulated 1000 ASA setting or does it create a false, coarse grain to simulate celluloid? Can anyone reccomend a good, online dealer to purchase the camera and lenses from, that they've personally done business with? Thanks.