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Resolution charts
As part of our image quality testing for the Leica M9, we've shot our resolution chart with the Leica APO-Summicron-M 75mm f/2 ASPH lens mounted.
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 200 the Leica is capable of resolving up to around 28 (line widths per picture height x100) in its highest quality JPEG files.
Examining images of the chart taken at each sensitivity setting reveals the following resolution scores in line widths per picture height x100:
ISO 80, score: 22 (see full image)
ISO 160, score: 26 (see full image)
ISO 200, score: 28 (see full image)
ISO 250, score: 28 (see full image)
ISO 320, score: 26 (see full image)
ISO 400, score: 26 (see full image)
ISO 500, score: 26 (see full image)
ISO 640, score: 24 (see full image)
ISO 800, score: 24 (see full image)
ISO 1000, score: 24 (see full image)
ISO 1250, score: 24 (see full image)
ISO 1600, score: 22 (see full image)
ISO 2000, score: 22 (see full image)
ISO 2500, score: 20 (see full image)
