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By: Joshua Goldman
The best results from the S220 come at ISO 80 and ISO 100. As soon as you go up to ISO 200, detail and sharpness are on steady decline. The marks on the ruler are barely visible from noise reduction at ISO 400. Unfortunately, the camera seems to love this sensitivity when its in Auto ISO.
There are three remaining sensitivities above ISO 400--800, 1,600, and 2,000--that are really not usable for prints. However, if you're in low or dark lighting, you'll be able to capture photos. Just don't look at them too closely.
Photo credit: Matthew Fitzgerald/CNET

