Sigma 18-35mm preorders available at Amazon (click here).
Learningcameras reviewed Sigma’s biggest achievement (so far): The Sigma 18-35mm f/1.8 DC HSM lens, the first zoom lens for APS-C cameras to deliver constant f/1.8 over the zoom range. I featured many reviews here on CW, all praise the outstanding performance of this lens. Learningcameras review isn’t different. More after the break.
As usual I strongly recommend you have a look at the review, which has a link to download full resolution sample images shot with the Sigma (scroll down to the bottom of the post for the link). In the conclusion they write:
The big question is ‘Should I Buy This’ and that is somewhat of a tough question. Is it worth it? Absolutely the Sigma 18-35mm f1.8 is worth every penny bringing top of the line build quality, amazingly wide apertures, zoom abilities, and fast autofocus for only $799. However, this is not quite ‘cheap’, especially for an APS-C camera and the zoom range is somewhat limited. If you were considering the Sigma 35mm f/1.4, 30mm 1.4, or a Canon/Nikon alternative, I would seriously consider the Sigma 18-35 as the flexible range more than makes up for the lost 2/3 stops of aperture. Also, if you find yourself shooting indoors in tight spaces and frequently use this focal range, the Sigma should be your top choice. While there are some compromises with the large size and somewhat limited range for a zoom lens, the Sigma 35mm f/1.8 HSM lens is by far one of the most amazing zoom lenses around