<p>When I had a darkroom, I regularly enlarged prints to 8" x 10", from negatives from a wide variety of cameras. There was no lack of sharpness at that size, caused by the lens. More recently, I have a 9.5" x 15" print made from a image taken on a Canon 60D, using a Canon 55mm - 250mm kit zoom. There is no lack of sharpness with that, either.</p>