LensTip.com

Lens review

Canon EF-S 18-55 mm f/3.5-5.6 IS

24 March 2010
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 - - - - - - - - - - - - - - - - -

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

When it comes to the frame edge, the influence of the coma on the circular diode image is visible at all focal lengths. Fortunately the deformations are not exceptionally huge and quite forgivable for this price point.

Canon EF-S 18-55 mm f/3.5-5.6 IS - Coma and astigmatism

The astigmatism performance is visibly better – it is even nicer as we deal with a plastic construction here. The average difference between vertical and horizontal MTF50 values amounted to less than 6% - a result on the borderline between good and very good level.