Lens review
2010-02-10
Sigma 17-70 mm f/2.8-4.0 DC Macro OS HSM
5. Chromatic aberration
The Sigma’s 17-70 mm OS HSM chromatic aberration will be the most troublesome at the shortest focal length. Its value remains more or less constant amounting to 0.13% there, no matter what aperture we use – such a result is deemed by us as the upper part of medium level. On increasing the focal length the chromatic aberration problem decreases. At 28 mm it is on the low and medium border and for longer focal lengths it becomes imperceptible.
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