Pentax Optio S10 - Test shots – ISO performance

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”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 64 ISO.


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At the minimum setting of 64 ISO the image quality is excellent, with very sharp detail.


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Not much difference at 100 ISO, and image quality is still very good.


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200 ISO and already there is visible image noise, particularly in the green and black areas.


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Noise gets progressively worse at 400 ISO, with large random colour patches, but there is still some fine detail.


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At 800 ISO the noise reduction system has blurred the image, resulting in a loss of fine detail.


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At the maximum 1600 ISO image quality is very poor, with blotchy colour and little fine detail.


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This is the full frame at 1600 ISO.


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