LensTip.com

Lens review

Olympus M.Zuiko Digital 25 mm f/1.8

30 April 2014
Arkadiusz Olech

8. Vignetting

On the one hand a small Micro 4/3 sensor is easy to correct when it comes to the vignetting; on the other hand Olympus tries to construct really small lenses so a perfect vignetting correction is never a simple task. In the case of the Olympus 1.8/25 they didn’t succeed as you can notice while glancing at thumbnails below.

Olympus M.Zuiko Digital 25 mm f/1.8 - Vignetting


At the maximum relative aperture the vignetting reaches 47% (-1.85 EV). It would be difficult to call such a result good because even the tiny Panasonic 1.7/20 fared better. By f/2.0 the vignetting decreases to 43% (-1.62 EV) and by f/2.8 it drops to 35% (-1.23 EV). That aberration is still noticeable by f/4.0 where it amounts to 27% (-0.90 EV). Only by f/5.6 and f/8.0 the vignetting level can be called moderate as it gets to 21% (−0.68 EV) and15% (−0.48 EV) respectively.


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

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

As the Olympus 1.8/25 corrects the distortion well and doesn’t require any software assistance, JPEG images, compared to those saved as RAW files, aren’t cropped so the differences in vignetting between RAWs and JPEGs are small.

Olympus M.Zuiko Digital 25 mm f/1.8 - Vignetting