Canon IXUS 220 HS: Image quality and resolution
As part of our test we shoot our resolution chart at every sensitivity setting.
The higher the value quoted in the caption score, the greater the level of detail being resolved and the better the image quality.
ISO 100: score 22
ISO 200: score 22
ISO 400: score 20
ISO 800: score 20
ISO 1600: score 18
ISO 3200: score 16/18