Yikes! This tread has grown...and I say hurrah to that. My primary concern is image quality. The fact that the smaller digital(I can spell it when I try) lens is a possible burden in the future if and ever if full frame sensors drop in price, or if I need to trade or sell the lens to get another one... It seems the full frame 35mm size is the way to go, the best of the compromises. I simply did not want to purchase an expensive lens and be disappointed with the results. This input has been quite varied and much for thought. TomDart.