LensTip.com

Lens review

Olympus Zuiko Digital ED 12-60 mm f/2.8-4.0 SWD

3 November 2009
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 influence of coma on the circular diode picture can be observed the easiest in the frame corner at 60 mm. Undoubtedly it is one of the reasons of lowering the resolution at this particular focal length. At shorter lengths the coma is definitely less bothersome.

Olympus Zuiko Digital ED 12-60 mm f/2.8-4.0 SWD - Coma and astigmatism

The case of astigmatism looks even better – it amounts to less than 4% which we consider to be a very good result.