LensTip.com

Lens review

Samyang AF 35 mm f/2.8 FE

6 December 2017
Arkadiusz Olech

8. Vignetting

First let’s check how vignetting looks on the smaller APS-C sensor– appropriate thumbnails you can find below.

A7R II, APS-C, f/2.8 A7R II, APS-C, f/4.0
Samyang AF 35 mm f/2.8 FE - Vignetting Samyang AF 35 mm f/2.8 FE - Vignetting


At this place, nothing to worry. The vignetting is noticeable at the maximum relative aperture, reaching 29% (-0.98 EV) but already by f/4.0 and f/5.6 the problems become less pronounced, with the following results: 17% (-0.52 EV) and 13% (-0.41 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 - - - - - - - - - - - - - - - - -

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

Now let’s see how the tested lens fares on full frame by consulting thumbnails shown below.

A7R II, FF, f/2.8 A7R II, FF, f/4.0
Samyang AF 35 mm f/2.8 FE - Vignetting Samyang AF 35 mm f/2.8 FE - Vignetting
A7R II, FF, f/5.6 A7R II, FF, f/8.0
Samyang AF 35 mm f/2.8 FE - Vignetting Samyang AF 35 mm f/2.8 FE - Vignetting


In this case you can say the problems are really serious. At the maximum relative aperture you lose as much as 63% of light (-2.91 EV). It is a bit more than in the case of the Sonnar which vignetting amounted to 58%. By f/4.0 that aberration still remains distinct, reaching 49% (-1.97 EV), and by f/5.6 it is 42% (-1.59 EV) - by these apertures the Samyang performs better than the Sonnar. On further stopping down the situation doesn’t improve, though. By f/8.0 the brightness loss gets to 37% (−1.32 EV), and by f/11 it is 33% (−1.16 EV). You can still glimpse some vignetting even by f/16, where it reaches 30% (-1.01 EV).

Below we present averaged out values of brightness loss shown in concentric circles as you move further away from the frame centre. The numerical value for every image, expressed in percents, shows the area limited from the top and right by 100% and from the bottom by the presented curve. The area indicates how much light overall is lost due to the vignetting effect. Please don’t mix these percentages with the values given at the beginning of the chapter because they aren’t directly connected.

Samyang AF 35 mm f/2.8 FE - Vignetting

f/2.8 f/4 f/5.6 f/8


Sony A7R II, JPEG, f/2.8
Samyang AF 35 mm f/2.8 FE - Vignetting