Pentax X70 Digital Camera - 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. These pictures were taken indoors using reflected natural light

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This is the full frame at 100 ISO.

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At 100 ISO the level of detail is good, but there is some unevenness of mid-tone colour.

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Slightly more noise at 200 ISO, but overall quality is still fairly good.

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At 400 ISO there is a speckling of noise across the whole image, and some detail is lost.

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800 ISO and noise is now seriously hitting image quality.

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1600 ISO is best avoided.

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3200 ISO is available at 5MP. It would be OK for small web images.

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At 6400 ISO the image quality is fairly terrible.

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This is the full frame at 6400 ISO.

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