Nikon CoolPix S640 - 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 ISO test images are shot indoors using shaded natural light.”


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This is the full frame at 100 ISO.


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At minimum ISO the image quality is excellent. Those white marks are dust on the model.


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Still no problems at 200 ISO.


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Noise is starting to show at 400 ISO, but the overall quality is still good.


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Noise reduction has reduced the level of detail at 800 ISO, but colour rendition is still good.


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Noise is becoming a problem at 1600 ISO.


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Image quality is greatly reduced at 3200 ISO.


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Image noise is causing major problems at 6400 ISO, with some hot pixels and very little detail.


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This is the full frame at 6400 ISO.


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