LensTip.com

Lens review

Olympus M.Zuiko Digital ED 17 mm f/1.2 PRO

29 January 2019
Arkadiusz Olech

7. Coma, astigmatism and bokeh

The Olympus M.Zuiko Digital ED 17 mm f/1.2 PRO corrects coma moderately well. Images of a diode positioned in the very corner of the frame are noticeably distorted but still it would be difficult to call such an effect huge or even big. Additionally, that aberration decreases significantly on stopping down the aperture by 1 EV.

E-M5 II, f/1.2, center E-M5 II, f/1.2, corner
Olympus M.Zuiko Digital ED 17 mm f/1.2 PRO - Coma, astigmatism and bokeh Olympus M.Zuiko Digital ED 17 mm f/1.2 PRO - Coma, astigmatism and bokeh
E-M5 II, f/1.8, center E-M5 II, f/1.8, corner
Olympus M.Zuiko Digital ED 17 mm f/1.2 PRO - Coma, astigmatism and bokeh Olympus M.Zuiko Digital ED 17 mm f/1.2 PRO - Coma, astigmatism and bokeh


We don’t have any serious complaints when it comes to the correction of astigmatism for a change. An average difference between horizontal and vertical MTF50 function values amounted to just 6.7% which is a low value by our standards.


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 appearance of out-of-focus images, produced by the tested lens, can be called sensible. However, it would be difficult to praise them overly due to concentric rings visible in circles of light. They are most probably a result of employing a significant number of aspherical elements. That averagely good assessment is further justified by mechanical vignetting, visible by f/1.2 and f/1.8 apertures.

E-M5 II, f/1.2, center E-M5 II, f/1.2, corner
Olympus M.Zuiko Digital ED 17 mm f/1.2 PRO - Coma, astigmatism and bokeh Olympus M.Zuiko Digital ED 17 mm f/1.2 PRO - Coma, astigmatism and bokeh
E-M5 II, f/1.8, center E-M5 II, f/1.8, corner
Olympus M.Zuiko Digital ED 17 mm f/1.2 PRO - Coma, astigmatism and bokeh Olympus M.Zuiko Digital ED 17 mm f/1.2 PRO - Coma, astigmatism and bokeh
E-M5 II, f/2.5, center E-M5 II, f/2.5, corner
Olympus M.Zuiko Digital ED 17 mm f/1.2 PRO - Coma, astigmatism and bokeh Olympus M.Zuiko Digital ED 17 mm f/1.2 PRO - Coma, astigmatism and bokeh