Canon EF-S 18-55 mm f/3.5-5.6 IS
6. Distortion
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The distortion correction level has been slightly improved. In the case of the old “kit” lens that aberration at the widest angle reached - 4.6%, now it amounts to only – 3.96%. It is still a bit more than in the case of, for instance, the Nikkor.
The geometric deformations problem at the frame edge stops being bothersome with the increase of the focal length soon enough. At 35 mm this aberration level becomes imperceptible and amounts to - 0.17%. At 55 mm the distortion changes from barrel to pincushion and its value increases slightly (0.42%).
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