LensTip.com

Lens review

Samyang AF 24 mm f/2.8 FE

11 September 2018
Arkadiusz Olech

8. Vignetting

First, let’s check the vignetting level on the smaller APS-C sensor – appropriate thumbnails can be found below.

A7R II, APS-C, f/2.8 A7R II, APS-C, f/4.0
Samyang AF 24 mm f/2.8 FE - Vignetting Samyang AF 24 mm f/2.8 FE - Vignetting


Small dimensions and a wide angle of view mean the vignetting is visible even on the smaller detector. By f/2.8 we got a result of 36% (−1.31 EV), which is a high value for a full frame device. By f/4.0 the vignetting decreases to 22% (−0.73 EV), and on stopping down to f/5.6 it falls to 20% (−0.65 EV).


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Now let’s check the situation on full frame – once again appropriate thumbnails you can find below.

A7R II, FF, f/2.8 A7R II, FF, f/4.0
Samyang AF 24 mm f/2.8 FE - Vignetting Samyang AF 24 mm f/2.8 FE - Vignetting
A7R II, FF, f/5.6 A7R II, FF, f/8.0
Samyang AF 24 mm f/2.8 FE - Vignetting Samyang AF 24 mm f/2.8 FE - Vignetting


Here we deal with one of the highest results we have ever seen in the history of our tests. At the maximum relative aperture you lose as much as 74% of light in the frame corners (−3.87 EV). Stopping down the lens to f/4.0 helps but you still have to take into account a very high result, that of 57% (−2.46 EV). Also by f/5.6 and f/8.0 you won’t have any problems with noticing vignetting at all as it amounts to 51% (−2.09 EV) and 48% (−1.87 EV) respectively. Further stopping down doesn’t have any measureable influence on brightness loss values.

Sony A7R II, JPEG, f/2.8
Samyang AF 24 mm f/2.8 FE - Vignetting