Olympus mju 790 SW - 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 and maximum ISO settings have been reduced to let you see the full image, and 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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This is the full frame at 80 ISO.

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At the minimum ISO setting the image quality is very good, with no visible noise.

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Similar results at 100 ISO.

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There is some visible noise at 200 ISO, but it is not enough to cause problems.

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The noise level is higher at 400 ISo, but the image is still printable.

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There is a large increase in noise going up to 800 ISO, but overall colour balance is still fairly good, and the image is usable - just.

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Image quality is seriously affected at the maximum 1600 ISO, with faded colour and low detail.

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This is the full frame at 1600 ISO.

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