LensTip.com

Lens review

Samyang 85 mm f/1.8 ED UMC CS

5 October 2018
Arkadiusz Olech

8. Vignetting

Let’s glance at thumbnails below in order to assess the vignetting of the tested lens. We created the JPEG files, used in this category, with the help of the Fujifilm X-T2 camera.

Fujifilm X-T2, f/1.8 Fujifilm X-T2, f/2.0
Samyang 85 mm f/1.8 ED UMC CS - Vignetting Samyang 85 mm f/1.8 ED UMC CS - Vignetting
Fujifilm X-T2, f/2.8 Fujifilm X-T2, f/4.0
Samyang 85 mm f/1.8 ED UMC CS - Vignetting Samyang 85 mm f/1.8 ED UMC CS - Vignetting


Here small physical dimensions of the Samyang make themselves felt. At the maximum relative aperture the brightness loss in the frame corners amounts to as much as 46% (−1.77 EV) and it is a high result, especially in a case of a lens designed for a sensor smaller than full frame. After employing f/2.0 the vignetting decreases to a still significant value of 41% (−1.51 EV). You can get rid of that aberration only by f/2.8 where it reaches a moderate level of 19% (−0.62 EV); it disappears practically completely only after employing f/4.0, where it amounts to just 7% (−0.22 EV).


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Fujifilm X-T2, JPEG, f/1.8
Samyang 85 mm f/1.8 ED UMC CS - Vignetting