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Lens review

Sigma A 35 mm f/1.4 DG HSM

12 December 2012
Szymon Starczewski

8. Vignetting

If you work using a body with an APS-C/DX sensor the vignetting of the Sigma 1.4/35 shouldn’t be a problem. It can be seen in the thumbnails below.

Sigma A 35 mm f/1.4 DG HSM - Vignetting


The light fall-off in the frame corners is visible at the maximum relative aperture, amounting there to 26% (-0.85 EV). That aberration disappears almost completely by f/2.0, reaching just 9% (-0.29 EV).

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The chart below presents the results of the Sigma and its competitors in this category.


Sigma
1.4/35
Zeiss
1.4/35
Nikkor
1.4/35G
Canon
1.4/35L
Sony
1.4/35G
Samyang
1.4/35
f/1.4
36%
32%
32%
32%
24%
21%
f/2.0
9%
17%
14%
16%
11%
9%
f/2.8
6%
5%
5%
8%
4%
4%


Still it’s full frame which is the biggest challenge for 1.4/35 lenses. Thumbnails below show how serious a challenge it is.

Sigma A 35 mm f/1.4 DG HSM - Vignetting


At the maximum relative aperture the vignetting of the Sigma is monstrous, reaching 66% (-3.16 EV). Only the Canon fares here worse, the Nikkor is a tad better and the Zeiss, the Samyang and the Sony – much better. On stopping down the aperture the Sigma’s performance improves, though. By f/2.0 the vignetting is 44% (-1.69 EV) so the tested lens is better than the Canon, getting the same result, within the margin of error, as that of the Nikkor and the Sony. Still it loses out to the Zeiss and the Samyang (which, by the way, are physically the biggest instruments in this class of equipment). By f/2.8 the vignetting is still visible, amounting to 24% (-0.79 EV). Only by f/4.0 and f/5.6 you might forget about this aberration because in their case it reaches just about 15%.


Sigma
1.4/35
Zeiss
1.4/35
Nikkor
1.4/35G
Canon
1.4/35L
Sony
1.4/35G
Samyang
1.4/35
f/1.4
66%
55%
60%
70%
59%
48%
f/2.0
44%
36%
44%
50%
43%
34%
f/2.8
24%
17%
25%
35%
23%
19%
f/4.0
15%
8%
15%
27%
15%
12%



Sigma A 35 mm f/1.4 DG HSM - Vignetting