Canon PowerShot S5 IS - Test shots - ISO performance

Over the next few pages we show a range of test shots. On this page the full size image at the minimum ISO setting has been reduced to let you see the full image, and below that a series of full resolution crops have taken from original images at a range of ISO settings to show the overall image quality.

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At the minimum setting of ISO 80 the image quality is superb, with a high level of detail and no image noise.

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Already at ISO 100 the is some image noise visible, although it is very fine-grained.

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The noise level is slightly higher at ISO 200.

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Colour and luminance noise are both noticeable at 400 ISO.

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At ISO 800 the noise reduction system has reduced some of the colour noise, but the image quality is still rather poor.

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A lot of detail is lost at ISO 1600, and the image is pretty much unusable.

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This is the full frame at ISO 1600

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