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As part of our image quality testing for the Pentax 645Z review, 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 100 the Pentax 645Z is capable of resolving up to around 38 (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
Full ISO 100 image. See 100% crops below:
ISO 100. Score: 38. Click here to see full resolution image
ISO 200. Score: 38. Click here to see full resolution image
ISO 400. Score: 38. Click here to see full resolution image
ISO 800. Score: 38. Click here to see full resolution image
ISO 1600. Score: 36. Click here to see full resolution image
ISO 3200. Score: 36. Click here to see full resolution image
ISO 6400. Score: 36. Click here to see full resolution image
ISO 12800. Score: 34. Click here to see full resolution image
ISO 25600. Score: 32. Click here to see full resolution image
ISO 51200. Score: 28. Click here to see full resolution image
ISO 102400. Score: 24. Click here to see full resolution image
ISO 204800. Score: 18. Click here to see full resolution image
Raw
ISO 100. Score: 38. Click here to see full resolution image
ISO 200. Score: 38. Click here to see full resolution image
ISO 400. Score: 38. Click here to see full resolution image
ISO 800. Score: 38. Click here to see full resolution image
ISO 1600. Score: 38. Click here to see full resolution image
ISO 3200. Score: 36 Click here to see full resolution image
ISO 6400. Score: 34. Click here to see full resolution image
ISO 12800. Score: 32. Click here to see full resolution image
ISO 25600. Score: 28. Click here to see full resolution image
ISO 51200. Score: 24. Click here to see full resolution image
ISO 102400. Score: 20. Click here to see full resolution image
ISO 204800. Score: 16. Click here to see full resolution image
