Sony Alpha A200 Digital SLR - Test shots – ISO performance

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”A range of test shots are shown over the next few pages. Here, the full size images at the minimum and maximum ISO settings have 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 included in order for you to gain an appreciation of the overall quality.”


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This is a full-frame image at 100 ISO. All of these ISO test shots were taken in JPEG fine mode.


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Picture quality at 100 ISO is superb, with no noise, plenty of detail and perfect colour reproduction.


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There is no visible difference at 200 ISO.


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400 ISO also produces superb results, although there is a little fine-grained noise in the darker mid-tone areas.


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There is a little more visible noise at 800 ISO, but the overall level of detail is still very good.


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At 1600 ISO the noise in the darker areas is very visible, and the noise reduction has softened the detail somewhat.


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At the maximum 3200 ISO the noise is a lot more noticeable, but the sharpening algorithm has tidied up the edges of the black lettering.


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This is the full frame at 3200 ISO.


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