Awards

  • Recommended by TR

Summary

Our Score

9/10

User Score

Review Price £1,985.00

Sony Alpha A900 Digital SLR - 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 were shot in Raw mode and then converted using Adobe Camera Raw, with 25 percent chroma noise reduction.

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This is the full frame at 100 ISO.

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/94/e6aa29/333d/11172-sonya900iso100.jpg

Not too surprisingly, flawless image quality at 100 ISO.

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/94/7dd8d8/66c2/11172-sonya900iso200.jpg

No noticeable difference at 200 ISO.

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/94/d63403/2e66/11172-sonya900iso400.jpg

there is a little noise grain showing through at 400 ISO, but it's not enough to cause a problem.

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/94/2bc8f3/7c5f/11172-sonya900iso800.jpg

Slightly more texture at 800 ISO, but the effect is not dissimilar to film grain.

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/94/58d92f/e025/11172-sonya900iso1600.jpg

There's a little colour noise creeping in at 1600 ISO, but overall quality is still good.

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/94/ad3f80/e561/11172-sonya900iso3200.jpg

Noise is now very visible at 3200 ISO.

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/94/bfa3bf/476d/11172-sonya900iso6400.jpg

Image quality at 6400 ISO is not as good as some rivals, notably the Canon EOS 5D MkII.

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/94/72ca4b/be01/11172-sonya900isomax.jpg

This is the full frame at 6400 ISO.

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