Olympus Zuiko Digital 14-54 mm f/2.8-3.5
7. Coma and astigmatism
Please Support UsIf you enjoy our reviews and articles, and you want us to continue our work please, support our website by donating through PayPal. The funds are going to be used for paying our editorial team, renting servers, and equipping our testing studio; only that way we will be able to continue providing you interesting content for free. |
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Coma is not a serious problem for the tested lens as you can see in the picture below. The deformations of the circular diode image in the frame corner are visible at every focal length but they are small – noticeably smaller than in the case of the ZD 14-42 mm and the Leica. Actually the ZD 12-60 mm had them at the same or a minimally lower level.
We have no serious reservation about astigmatism either, which value we measured as 4.1%. Here the ZD 14-54 mm performs minimally better than the “kit” lens, a tad worse than the Leica and practically similarly than the ZD 12-60 mm. In actual facts, though, the whole astigmatism values range of these lenses, from 3.7% to 5.0%, is contained within the margin of errors, reaching about 1% in this case.
