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Canon IXUS 990 IS - 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 pictures were taken indoors using artificial light, with white balance set for the back board of the scene.



This is the full frame at 80 ISO.



At the minimum ISO setting the image quality is superb, with smooth tonal gradients and no sign of image noise.



The results are also pretty much perfect at 100 ISO.



Still no real problems at 200 ISO.



The noise reduction really kicks in at 400 ISO, but the results are very good, with excellent colour and only minor loss of detail.



More detail is lost at 800 ISO, and darker areas are quite blotchy.



Image quality is much lower at 1600 ISO, with considerable loss of fine detail, but still the exposure and colour are very good.



This is the full frame at 1600 ISO.


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