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As part of our image quality testing for the Sony Alpha a99, we've shot our resolution chart.
If you view our crops of the resolution chart's central section at 100% (or Actual Pixels) you will see that, for example, at ISO 50 the Sony Alpha a99 is capable of resolving up to around 28 (line widths per picture height x100) in its highest quality JPEG files.
For a full explanation of what our resolution charts mean, and how to read them, check out our full explanation of our camera testing resolution charts.
Examining images of the chart taken at each sensitivity setting reveals the following resolution scores in line widths per picture height x100:
JPEG
ISO 50, score: 28 (Click here to see the full resolution image)
ISO 100, score: 28 (Click here to see the full resolution image)
ISO 200, score: 28 (Click here to see the full resolution image)
ISO 400, score: 28 (Click here to see the full resolution image)
ISO 800, score: 28 (Click here to see the full resolution image)
ISO 1600, score: 26 (Click here to see the full resolution image)
ISO 3200, score: 26 (Click here to see the full resolution image)
ISO 6400, score: 24 (Click here to see the full resolution image)
ISO 12800, score: 22 (Click here to see the full resolution image)
ISO 25600, score: 20 (Click here to see the full resolution image)
Raw
ISO 50, score: 28 (Click here to see the full resolution image)
ISO 100, score: 28 (Click here to see the full resolution image)
ISO 200, score: 28 (Click here to see the full resolution image)
ISO 400, score: 28 (Click here to see the full resolution image)
ISO 800, score: 28 (Click here to see the full resolution image)
ISO 1600, score: 28 (Click here to see the full resolution image)
ISO 3200, score: 28 (Click here to see the full resolution image)
ISO 6400, score: 26 (Click here to see the full resolution image)
ISO 12800, score: 24 (Click here to see the full resolution image)
ISO 25600, score: 20 (Click here to see the full resolution image)
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