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  Reviews by: swinginjonny  

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Sigma 17-70mm F2.8-4.5 DC MACRO

Review Date: Jun 12, 2007 Recommend? yes | Price paid: $450.00 | Rating: 9 

Pros: Range, price, image quality, almost non-existent fringing on high-contrast subjects.
Lens becomes very loose with time. average focus in very low light, only f4.5 at 70mm.

I love this lens. After doing a lot of research I bought it as my workhorse lens about a year ago. I shoot weddings and have very specific needs and requirements. First of all, I couldn't afford L-series lenses but I researched them for comparison sake. I shot quite extensively with the 17-40L for a while as well as the Canon 17-85 IS. The 17-40 doesn't have enough zoom for the photojournalism side of weddings or as a walkaround lens. The 17-85 had disappointing image quality and had a lot of fringing on high-contrast areas (such as a wedding dress next to a black tux). The Sigma 17-70 has a perfect blend of the two. Most of the time, the image quality is fantastic. I love the 2.8 speed wide-open and though there is a definite loss of sharpness, it can easily be sharpened sufficiently in post. Though it doesn't have image stabilization, the wider aperture compensates. I was concerned with the build quality as the lens began to loosen up. I was concerned about dust inside the lens as it loosened. There is none. It seems to be sealed well, making the looseness more of an annoyance than anything else. There is almost no chromatic aberration whatsoever and it focuses quickly and well in most situations. It's not an L-series lens but at $450 you can't expect it to be. Overall, this lens is everything I hoped it would be, a versatile, inexpensive, all-around lens--the perfect substitute for the sub-standard kit lens Canon passes off with its lower-end pro and prosumer cameras.