As part of our image quality testing fo the Sony Alpha 77, 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 Sony Alpha 77 is capable of resolving up to around 28 (line widths per picture height x100) in its highest quality JPEG files. Although the resolution lines are clearly distinguishable there is, however, some disruption from about 24 LW/PH x100 onwards.

For a full explanation of what our resolution charts mean, and how to read them please take a look at the resolution charts article.

Examining images of the chart taken at each sensitivity setting reveals the following resolution scores in line widths per picture height x100:

Sony alpha 77 review: resolution iso 100
Sony alpha 77 review: resolution iso 100

Sony alpha 77 review: resolution iso 50
Sony alpha 77 review: resolution iso 50

ISO 50, score: 28 (see full image)

JPEG Images

Sony alpha 77 review: resolution iso 100
Sony alpha 77 review: resolution iso 100

ISO 100, score: 28 (see full image)

Sony alpha 77 review: resolution iso 200
Sony alpha 77 review: resolution iso

ISO 200, score: 28 (see full image)

Sony alpha 77 review: resolution iso 400
Sony alpha 77 review: resolution iso 400

ISO 400, score: 26 (see full image)

Sony alpha 77 review: resolution iso 800
Sony alpha 77 review: resolution iso 800

ISO 800, score: 26 (see full image)

Sony alpha 77 review: resolution iso 1600
Sony alpha 77 review: resolution iso 1600

ISO 1600, score: 24 (see full image)

Sony alpha 77 review: resolution iso 3200
Sony alpha 77 review: resolution iso 3200

ISO 3200, score: 24 (see full image)

Sony alpha 77 review: resolution iso 6400
Sony alpha 77 review: resolution iso 6400

ISO 6400, score: 22 (see full image)

Sony alpha 77 review: resolution iso 12800
Sony alpha 77 review: resolution iso 12800

ISO 12800, score: 20 (see full image)

Sony alpha 77 review: resolution iso 16000
Sony alpha 77 review: resolution iso 16000

ISO 16000, score: 20 (see full image)

Raw images

Sony alpha 77 review: raw resolution iso 50
Sony alpha 77 review: raw resolution iso 50

ISO 50, score: 28 (see full image)

Sony alpha 77 review: resolution iso 100
Sony alpha 77 review: resolution iso 100

ISO 100, score: 28 (see full image)

Sony alpha 77 review: resolution iso 200
Sony alpha 77 review: resolution iso 200

ISO 200, score: 28 (see full image)

Sony alpha 77 review: resolution iso 400
Sony alpha 77 review: resolution iso 400

ISO 400, score: 26 (see full image)

Sony alpha 77 review: resolution iso 800
Sony alpha 77 review: resolution iso 800

ISO 800, score: 24 (see full image)

Sony alpha 77 review: resolution iso 1600
Sony alpha 77 review: resolution iso 1600

ISO 1600, score: 24 (see full image)

Sony alpha 77 review: resolution iso 3200
Sony alpha 77 review: resolution iso 3200

ISO 3200, score: 24 (see full image)

Sony alpha 77 review: resolution iso 6400
Sony alpha 77 review: resolution iso 6400

ISO 6400, score: 22 (see full image)

Sony alpha 77 review: resolution iso 12800
Sony alpha 77 review: resolution iso 12800

ISO 12800, score: 20 (see full image)

Sony alpha 77 review: resolution iso 16000
Sony alpha 77 review: resolution iso 16000

ISO 16000, score: 20 (see full image)