Like most point-and-shoot cameras, the TL320 hits a wall at ISO 200. Photos are less than sharp from the get-go and there is some graininess when viewed at 100 percent, particularly at ISO 200. At ISO 400, the noise reduction makes things hazy and soft, though a good amount of detail remains. This, of course, increases at ISO 800 and 1600. While photos taken at ISO 800 are still usable for the Web and small prints, those at ISO 1600 have noticeable color issues.