Samsung NX 20-50 mm f/3.5-5.6 ED
7. Coma and astigmatism
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The tested lens’s coma correction can be described as a simple correlation – the longer focal length the better. At 20 mm the coma is noticeable but at 50 mm it disappears practically completely. In this category the Samsung NX 20–50 mm f/3.5–5.6 presents average results.
The astigmatism of the tested lens reaches the level of 9% which can be considered the borderline between good and average level.
