Lens Replacement for 18-55 IS

Started Feb 2, 2011 | Discussions thread
dt-photo New Member • Posts: 17
Sigma 17-70 vs 18-55 IS

wardmartin wrote:

I use the Sigma 17-70 although I have the OS version. It's a significant step up over the 18-55 kit lens in my opinion. It's brilliantly sharp and the build quality is excellent. I'd recommend it to anyone as an upgrade. The extra reach and close focus come in handy too.

It's a step up in price and probably build quality, i'm not sure it's a step up in performance/functionality/sharpness. E.g at 17/18mm the centre res is pretty comparable, but the borders never quite catch up to the Kit lens...:

vs.

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