Nikon D90 digital SLR - Test Shots - ISO Performance

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 reflected natural light for maximum consistency.

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Theis is the full frame at 100 ISO.

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At the lowest ISO setting, images are clear, sharp and noise-free.

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A little image noise is visible at 200 ISO, and the exposure meter has under-exposed the shot by around one stop.

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Slightly more noise is visible at 400 ISO.

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The red channel is starting to look very blotchy at 800 ISO.

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Noise is becoming a problem at 1600 ISO.

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3200 ISO is normally the maximum setting.

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6400 ISO is available in extended mode.

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This is the full frame at 6400 ISO.

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