Pentax Optio E30 Review - Test shots – ISO performance Review

”A range of test shots are shown over the next few pages. Here, the full size image at the minimum ISO setting has been reduced for bandwidth purposes to let you see the full image, and a series of crops taken from original full resolution images at a range of ISO settings have been placed below it in order for you to gain an appreciation of the overall quality.”


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At the minimum ISO setting of 80 the image quality is very good, with bright clear colours and no image noise.


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At only 160 ISO there is already colour speckling in the darker areas of the image.


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At 320 ISO there is visible noise right across the image, and detail is already breaking down.


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At the relatively low maximum sensitivity of 400 ISO the image quality is very poor, with severe loss of detail, colour distortion and visible noise.


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