Sigma DP2s - 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. These pictures were taken indoors using shaded natural light. ”


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This is the full frame at 50 ISO.


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At 50 ISO the image quality is flawless, with no trace of noise, perfect sharpness, brilliant colour and tons of detail.


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No real difference at 100 ISO.


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Still no problems at 200 ISO.


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There is a light dusting of fine-grained noise at 400 ISO, but the image is quite printable.


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There is more noise at the maximum 800 ISO, and the red channel is a bit blotchy, but it’s still far from shabby.


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This is the full frame at 800 ISO.


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