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A range of test shots are shown over the next few pages. Here, the full size image has been reduced for bandwidth purposes, and a crop taken from the original full resolution image has been placed below it in order for you to gain an appreciation of the overall quality. The following pages consist of resized images so that you can evaluate the overall exposure. For those with a dial-up connection, please be patient while the pages download.
1/160th sec., f3.5, 80 ISO
At the minimum 80 ISO there is no noise. Is there ever? The mane on this horse sculpture is made out of old recording tape and blows in the wind.
1/200th sec., f3.5, 100 ISO
At 100 ISO, just 1/3rd of a stop faster, there is still no image noise. No surprises there then.
1/400th sec., f3.5, 200 ISO
Double the ISO to 200, and most cameras are starting to show a bit of speckling. The IXUS 850 however remains noiseless.
1/800th sec., f3.5, 400 ISO
There’s just a hint of speckling in the darker areas, but the shadows are still deep and black, and the image quality is virtually unaffected. On most other cameras the image would be unusable at this speed.
1/250th sec., f9.0, 800 ISO
At 800 ISO there is some image noise, but it’s an even speckling with none of the colour channel noise usually seen in high-ISO shots. Some detail has been lost though.
1/500th sec., f9.0, 1600 ISO
At the maximum ISO setting of 1600 there is plenty of image noise, but it is even and fine textured like film grain and has no colour distortion. An impressive performance.
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