Why you can trust TechRadar We spend hours testing every product or service we review, so you can be sure you’re buying the best. Find out more about how we test.
Overall picture
As part of our image quality testing for the Olympus OM-D E-M5 , 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 200 the Olympus OM-D E-M5 is capable of resolving up to around 24 (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 please click here to read the full article.
Examining images of the chart taken at each sensitivity setting reveals the following resolution scores in line widths per picture height x100:
JPEG files
ISO 200, score: 24 (see full image)
ISO 400, score: 24 (see full image)
ISO 800, score: 24 (see full image)
ISO 1600, score: 22 (see full image)
ISO 3200, score: 20 (see full image)
ISO 6400, score: 16 (see full image)
ISO 12800, score: 12 (see full image)
ISO 25600 , score: 10 (see full image)
Raw Images
ISO 200 , score: 26 (see full image)
ISO 400 , score: 24 (see full image)
ISO 800 , score: 24 (see full image)
ISO 1600 , score: 22 (see full image)
ISO 3200 , score: 22 (see full image)
ISO 6400 , score: 16 (see full image)
ISO 12800 , score: 14 (see full image)
ISO 25600 , score: 10 (see full image)
