Summary

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8/10

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Pentax Optio A40 - Test shots - ISO performance

A range of test shots are shown over the next few pages. Here, the full size images at the minimum and maximum ISO settings have been reduced for bandwidth purposes to let you see the full image, and a series of crops taken from original full resolution images at a range of ISO settings have been included in order for you to gain an appreciation of the overall quality.

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/94/72ccad/6665/7061-PentaxA40ISOmin.jpg

This is the full frame at minimum ISO.

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/94/6f8502/7220/7061-PentaxA40ISO50.jpg

At 50 ISO the picture is sharp and clean with excellent detail.

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/94/39016f/cbc8/7061-PentaxA40ISO100.jpg

Very little difference at 100 ISO.

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/94/08d77e/83a9/7061-PentaxA40ISO200.jpg

At 200 ISO there is some luminance noise, but colour reproduction is unaffected.

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/94/66befd/5e35/7061-PentaxA40ISO400.jpg

At 400 ISO the noise reduction kicks it up a notch, reducing fine detail.

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/94/fccd4c/69f8/7061-PentaxA40ISO800.jpg

Image quality is much worse at 800 ISO.

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/94/b2e04a/c8be/7061-PentaxA40ISO1600.jpg

At 1600 ISO there is very little fine detail left.

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/94/415bd1/7f0e/7061-PentaxA40ISOmax.jpg

This is the full frame at maximum ISO.

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