Sigma DP2 Review - Test Shots – ISO Performance Review

Sections

”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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”’(centre)This the full frame at ISO50(/centre)”’

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”’(centre)At the base setting of ISO50 image quality is very high, with excellent colour and reasonable detail.(/centre)”’

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”’(centre)There’s not much difference to the image at ISO100, there’s a very slight increase in contrast and sharpness.(/centre)”’

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”’(centre)Images at ISO200 are still silky smooth, though colour saturation is slightly lower.(/centre)”’

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”’(centre)At ISO400 there’s the first evidence of slightly gritty luminance noise, meanwhile colour accuracy slips further.(/centre)”’

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”’(centre)By ISO800 it’s very obvious that strong noise reduction is removing colour leaving quite pronounced gritty noise.(/centre)”’

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”’(centre)Noise reduction is letting through colour blotches and shadow detail is blocking up.(/centre)”’

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”’(centre)At ISO3200 there’s more of the same and it’s not particularly attractive.(/centre)”’

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”’(centre)This is the full frame at ISO3200.(/centre)”’

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