Pentax 645Z review

A bit like a bigger version of the Pentax K-3

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Pentax 645Z
It doesn't mind a bit of rain

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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

Pentax 645Z

Full ISO 100 image. See 100% crops below:

Pentax 645Z

ISO 100. Score: 38. Click here to see full resolution image

Pentax 645Z

ISO 200. Score: 38. Click here to see full resolution image

Pentax 645Z

ISO 400. Score: 38. Click here to see full resolution image

Pentax 645Z

ISO 800. Score: 38. Click here to see full resolution image

Pentax 645Z

ISO 1600. Score: 36. Click here to see full resolution image

Pentax 645Z

ISO 3200. Score: 36. Click here to see full resolution image

Pentax 645Z

ISO 6400. Score: 36. Click here to see full resolution image

Pentax 645Z

ISO 12800. Score: 34. Click here to see full resolution image

Pentax 645Z

ISO 25600. Score: 32. Click here to see full resolution image

Pentax 645Z

ISO 51200. Score: 28. Click here to see full resolution image

Pentax 645Z

ISO 102400. Score: 24. Click here to see full resolution image

Pentax 645Z

ISO 204800. Score: 18. Click here to see full resolution image

Raw

Pentax 645Z

ISO 100. Score: 38. Click here to see full resolution image

Pentax 645Z

ISO 200. Score: 38. Click here to see full resolution image

Pentax 645Z

ISO 400. Score: 38. Click here to see full resolution image

Pentax 645Z

ISO 800. Score: 38. Click here to see full resolution image

Pentax 645Z

ISO 1600. Score: 38. Click here to see full resolution image

Pentax 645Z

ISO 3200. Score: 36 Click here to see full resolution image

Pentax 645Z

ISO 6400. Score: 34. Click here to see full resolution image

Pentax 645Z

ISO 12800. Score: 32. Click here to see full resolution image

Pentax 645Z

ISO 25600. Score: 28. Click here to see full resolution image

Pentax 645Z

ISO 51200. Score: 24. Click here to see full resolution image

Pentax 645Z

ISO 102400. Score: 20. Click here to see full resolution image

Pentax 645Z

ISO 204800. Score: 16. Click here to see full resolution image

Angela Nicholson