OM System M.Zuiko Digital ED 90 mm f/3.5 Macro IS PRO review - Vignetting

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OM System M.Zuiko Digital ED 90 mm f/3.5 Macro IS PRO

8 February 2023

Maciej Latałło

8. Vignetting

Let's have a glance at thumbnails below in order to assess vignetting performance of the tested lens. We measured it in JPEG files generated with the help of the Olympus O-MD E-M5 Mark II.

Olympus E-M5 II, JPEG, 90 mm, f/3.5	Olympus E-M5 II, JPEG, 90 mm, f/4.0

Olympus E-M5 II, JPEG, 90 mm, f/5.6	Olympus E-M5 II, JPEG, 180 mm, (TC), f/7.1

Here you can say that the lens doesn't have any significant problems with vignetting and the possibilities of the small detector have been used to the full. Vignetting can be noticed only by f/3.5 and f/4.0 where it is, respectively, 27% (-0.91 EV) and 21% (-0.67 EV). By f/5.6 this aberration becomes completely invisible, reaching just 3% (-0.09 EV).

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An even better situation can be observed when you attach the MC-20 teleconverter. In this case vignetting is negligible even at the maximum relative aperture. Amounting to just 4% (-0.11 EV).

So far we have analyzed JPEG files only but they weren't vignetting-corrected and significantly cropped because the lens has practically no distortion so its images doesn't have to be corrected. As a result vignetting on RAW files is basically the same as on JPEG files. The biggest difference we could find reached just one percentage point.

Olympus OM-D E-M5 Mark II, JPEG, 90 mm, f/3.5