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Olympus E-620 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.
This the full frame at ISO100
At ISO100, and with gradation set to Normal, image quality is high, with good tonality, colour and high levels of detail.
At ISO200, there's slight improvement in contrast and apparent sharpness.
Images at ISO400 retain good detail and colour.
At ISO800 there's slightly gritty luminance noise, and quite noticeable colour speckling in the darker shadows.
At ISO1600 noise reduction is removing colour speckling in brighter areas leaving quite pronounced gritty noise.
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.
This is the full frame at ISO3200
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