LensTip.com

Lens review

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

30 September 2007
Arkadiusz Olech

7. Coma and astigmatism



Please Support Us

The coronavirus crisis has been adversely affecting many businesses and, sad but true, ours is not an exception. Despite that difficult situation we would like to preserve continuity and high quality of publications available on all our websites. Still, we are now aware it might be impossible without additional financial help. That's why we would like to ask all those who visit, read, and care about Optyczne.pl, LensTip.com i Allbinos.com for support - it's enough you send us a small sum of money via PayPal. If a lot people decide to support our websites we think we'll stand a chance and survive next months without any lasting harm. We count on your support and understanding, stay safe and be healthy.

- - - - - - - - - - - - - - - - - advertisement - - - - - - - - - - - - - - - - -

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

The Canon 55-200, especially in the 55 mm to 100 mm focal lengths, corrects coma very well at the edges of the frame. This is a result of the very small differences in MTF50 value measurements in the center and at the edges of the frame. We wrote about this above and the results can be seen in the pictures in the MTF50 charts.

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

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

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

Astigmatism is at a low level in our lens. The measured difference between the horizontal and vertical MTF50 values in the center of the frame is 3.5%. The lowest values were measured at the 200 mm focal length.