Canon EF-S 18-55 mm f/3.5-5.6 IS II
6. Distortion
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Let’s remind here that in the case of the older 18-55 mm model, equipped with image stabilization, the distortion at 18, 35 and 55 mm focal lengths was respectively −3.96%, −0.17% and 0.42%. The results we got for the new kit are a bit better because at 18, 30 and 55 mm they amounted to −3.52%, −0.40% and 0.40% respectively. It is difficult to state unambiguously whether it is any improvement or the difference is again due to the quality dispersion. However, especially at the shortest focal length, the result is noticeably better. It isn’t caused by measurement errors because these, in the case of distortion, typically are on the level of 0.1% (0.2% at most in special cases).
| Canon 50D, 18 mm | |||
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| Canon 50D, 30 mm | |||
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| Canon 50D, 55 mm | |||
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