Sigma 18-35mm f/one.8 DC HSM | A (“Art”) – Review / Exam Report
Lens Reviews –
Canon EOS (APS-C)
Page i of 3
Review past Klaus Schroiff, published May 2014
Nosotros are a little late with this review only finally here it is … our test of the Sigma 18-35mm f/1.eight DC HSM “Art” (Canon mount, Nikon will follow eventually). The lens produced quite some buzz when it was released before this year. Given the focal length range you may expect a total format ultra-wide zoom lens but it has been exclusively designed for the APS-C scope – hence as well the “DC” in the lens proper name. The exciting thing about information technology is, of course, the max. aperture of f/i.8. As such, the Sigma is the fastest (mass production) DSLR zoom lens ever. Now even so we still weren’t overly impressed when the lens was announced. After all, information technology is just a “29-56mm f/2.viii” when thinking in equivalent full format range and depth-of-field terms or to phrase it differently – you may even raise the question whether it is a standard zoom lens with its 2x zoom ratio. Moreover this Sigma lens is also as expensive, as big and as heavy as its full format counterparts which negates a bit the idea of having an APS-C format camera in the beginning place. Even so, it received enthusiastic comments from (potential) users so nosotros may exist rather alone cowboys with these preliminary thoughts.
The build quality of the Sigma lens is certainly zilch short outstanding. Besides some metallic parts, Sigma uses a new material called TSC (Thermally Stable Composite) which contributes to the high quality perception. It is a “true” internal focusing lens thus it doesn’t even extend during focusing operations. The broad zoom and focus rings are nicely rubberized and operate super polish and, of course, without having play. A petal-shaped lens hood is part of the package.
The 18-35mm f/i.viii DC HSM | A features Sigma’due south ultrasonic AF drive (HSM=”Hypersonic”) which is like to Catechism’southward USM both in terms of high speed and negligible noise. Of grade, this applies to phase detection AF whereas in Live View mode yous shouldn’t expect wonders here. It is also worth to note that the lens is compatible to Sigma’s USB dock (for AF tuning) and they also offer a mount conversion service (e.m. Canon EF to Nikon).