Sigma 10-20 mm f/3.5 EX DC HSM
8. Vignetting
Unfortunately, Sigma 10-20 mm f/3.5 doesn’t come out so well here. At the most difficult variation of the widest angle and f/3.5 aperture, vignetting reaches a huge level of 53% (-2.16 EV). Bad news is not over yet, as vignetting falls quite slowly with stopping down. At apertures f/4.0, f/5.6 and f/8.0 it amounts to 43%, 29% and 25% respectively.
Increasing focal length helps, but not as much as we’d expect. At 15 mm and the maximum aperture, light falloff in the corners of the frame amounted to 42% (-1.59 EV). Here, decreasing of vignetting is even slower when stopping down, as at f/4.0 vignetting amounts to 39%, at f/5.6 still reaches a high level of 32%, and at f/8.0 we have a value of 25%.
Please Support UsIf you enjoy our reviews and articles, and you want us to continue our work please, support our website by donating through PayPal. The funds are going to be used for paying our editorial team, renting servers, and equipping our testing studio; only that way we will be able to continue providing you interesting content for free. |
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
The maximum focal length isn’t any better. At f/3.5 the level of this aberration was measured to be 43% (-1.61 EV), at f/4.0 it’s 40%, at f/5.6 it’s 35% and at f/8.0 - 26%.
We can see, then, that we’re dealing with one of the worst results in the ultra wide angle zoom lenses category. Vignetting will surely bother us in many situations, except maybe, when we’re fans of the mythical “magic” full frame camera bodies give. The thing is, to get this you also need a shallow depth of field, which this lens doesn’t provide you with.
 |
 |
