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Canon Digital IXUS 75 - 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 ISO setting has been reduced to let you see the full image, and below that a series of full resolution crops have taken from original images at a range of ISO settings to show the overall image quality.
As is nearly always the case, image quality at 80 ISO is first rate, although there are a few compression artefacts visible.
100 ISO and already there are some random red and green spots in the darker areas.
Not much worse at 200 ISO, but some extra shadow detail has been lost.
Noticeably worse at 400 ISO, with both luminance and chromatic noise right across the image.
The image quality is worse still at 800 ISO. The small banner is barely readable.
At 1600 ISO the image quality is very poor, and this setting should be avoided. To be fair, this performance is no worse than many other 7MP compacts, but this one is very expensive.
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