Olympus E-620 Digital SLR - 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. ”


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This the full frame at ISO100


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At ISO100, and with gradation set to Normal, image quality is high, with good tonality, colour and high levels of detail.


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At ISO200, there’s slight improvement in contrast and apparent sharpness.


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Images at ISO400 retain good detail and colour.


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At ISO800 there’s slightly gritty luminance noise, and quite noticeable colour speckling in the darker shadows.


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At ISO1600 noise reduction is removing colour speckling in brighter areas leaving quite pronounced gritty noise.


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At ISO3200 using the default Auto NR and STD Noise Filter settings there’s distinctly more colour noise than at lower ISOs and there’s a noticeable lowering of detail but it’s likely fine for small prints.


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This is the full frame at ISO3200


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