LensTip.com

Lens review

Samyang AF 35 mm f/1.4 FE

30 March 2018
Arkadiusz Olech

8. Vignetting

First let’s check the vignetting level for the smaller APS-C sensor – appropriate thumbnails are shown below.

A7R II, APS-C, f/1.4 A7R II, APS-C, f/2.0
Samyang AF 35 mm f/1.4 FE - Vignetting Samyang AF 35 mm f/1.4 FE - Vignetting


Good results are guaranteed here by the significant physical dimensions of the lens. The vignetting is noticeable only at the maximum relative aperture, where it reaches 27% (−0.91 EV). By f/2.0 and f/2.8 it disappears almost completely, being just 12% (−0.39 EV) and 8% (−0.25 EV) respectively.


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After passing to a bigger full frame sensor there are more problems as illustrated by photos below.

A7R II, FF, f/1.4 A7R II, FF, f/2.0
Samyang AF 35 mm f/1.4 FE - Vignetting Samyang AF 35 mm f/1.4 FE - Vignetting
A7R II, FF, f/2.8 A7R II, FF, f/4.0
Samyang AF 35 mm f/1.4 FE - Vignetting Samyang AF 35 mm f/1.4 FE - Vignetting


The loss of light at the maximum relative aperture is really huge, reaching 64% (−2.91 EV). The light fall-off is also easy to notice by f/2.0 and f/2.8 apertures, where it is, respectively, 47% (−1.81 EV) and 33% (−1.17 EV). Only by f/4.0 that aberration level can be called moderate, with a result of 27% (−0.91 EV). After employing f/5.6 you see the vignetting decrease again but only slightly; in that place we got a value of 24% (−0.79 EV). Further stopping down of the aperture didn’t have any measureable effect on results of the tested lens in this category.

Sony A7R II, JPEG, f/1.4
Samyang AF 35 mm f/1.4 FE - Vignetting