Pentax Optio V20 - 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 a full-frame image at the minimum sensitivity of 80 ISO.


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Image quality is very good at 80 ISO, with smooth texture and excellent detail.


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There is very slight colour mottling at 100 ISO, but overall quality is still very good.


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There is slight noise reduction blurring at 200 ISO, but not enough to cause a problem.


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400 ISO and there is still plenty of fine detail, although there are signs of noise in the green areas.


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At 800 ISO the noise reduction really goes to work, and a lot of fine detail is scrubbed out.


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Image quality is greatly reduced at 1600 ISO.


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3200 ISO is limited to 5MP, and image quality is very poor.


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6400 ISO at 5MP, and it looks like a still from YouTube.


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This is the full frame at the maximum ISO setting.


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