Pentax Optio P70 - 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 ISO test images are shot indoors using reflected natural light for maximum consistency.

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This is the full frame at minimum ISO. It is under-exposed slightly due to the limited shutter speed in program mode.

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There is a slight haze of noise at 64 ISO, but the overall level of detail is good, and colours are accurate.

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Exposure is correct at 100 ISO, and the noise levels are about the same.

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Not much difference at 200 ISO.

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There is some colour distortion at 400 ISO, but this would still make a good print.

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Noise is starting to become a problem at 800 ISO, but overall quality is still pretty good.

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Lots of noise now at 1600 ISO, but exposure and colour are still quite good.

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3200 ISO is available, but limited to 5MP. Image quality is pretty terrible though.

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At 6400 ISO we're into cheap webcam territory.

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This is the full frame at 6400 ISO.

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