As part of our image quality testing for the Pentax K-01, we've shot our resolution chart with a Sigma 50mm f/1.4 EX DG HSM 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 100 the Pentax K-01 is capable of resolving up to around 22 (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:

Pentax K-01 review

JPEG images

Pentax K-01 review

ISO 100, score: 22 (Click here for the full resolution image)

Pentax K-01 review

ISO 200, score: 22 (Click here for the full resolution image)

Pentax K-01 review

ISO 400, score: 22 (Click here for the full resolution image)

Pentax K-01 review

ISO 800, score: 22 (Click here for the full resolution image)

Pentax K-01 review

ISO 1600, score: 20 (Click here for the full resolution image)

Pentax K-01 review

ISO 3200, score: 20 (Click here for the full resolution image)

Pentax K-01 review

ISO 6400, score: 22 (Click here for the full resolution image)

Pentax K-01 review

ISO 128000, score: 20 (Click here for the full resolution image)

Pentax K-01 review

ISO 25600, score: 18 (Click here for the full resolution image)

Raw images

Pentax K-01 review

ISO 100, score: 24 (Click here for the full resolution image)

Pentax K-01 review

ISO 200, score: 24 (Click here for the full resolution image)

Pentax K-01 review

ISO 400, score: 24 (Click here for the full resolution image)

Pentax K-01 review

ISO 800, score: 20 (Click here for the full resolution image)

Pentax K-01 review

ISO 1600, score: 20 (Click here for the full resolution image)

Pentax K-01 review

ISO 3200, score: 20 (Click here for the full resolution image)

Pentax K-01 review

ISO 6400, score: 20 (Click here for the full resolution image)

Pentax K-01 review

ISO 12800, score: 20 (Click here for the full resolution image)

Pentax K-01 review

ISO 25600, score: 16 (Click here for the full resolution image)