Canon EF 55-200 mm f/4.5-5.6 II USM review - Chromatic aberration

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Canon EF 55-200 mm f/4.5-5.6 II USM

30 September 2007

Arkadiusz Olech

5. Chromatic aberration

At the focal length range ends chromatic aberration is visible at the 0.10% level. At 55 mm the aberration increases slightly when the diaphragm value increases. At 200 mm the situation is the exact opposite.

Canon EF 55-200 mm f/4.5-5.6 II USM - Chromatic aberration

The chromatic aberration completely disappears at the 100 mm focal length, which is a very interesting characteristic for the Canon 55-200. When using a diaphragm, the aberration is at a 0.02% level. It is thanks to this feature that the picture resolution at the edges of the frame at 100 mm is so good.

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In the pictures below we present the ISO table 1:1 clippings set up 70% away from the center of the field of view. We can clearly see the high chromatic aberration at 55 and 200 mm and its absence at 100 mm.