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Old Sep 16, 2007, 11:44 AM   #1
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Which is a better lens for a nikon d80 user --

SIGMA 17-70mm F2.8-4.5 DC HSM MACRO

or

SIGMA 18-50mm F2.8 EX DC

It's my understanding that the HSM designation basically means it'll work for d40 users, so I don't really need to worry about that since I have a d80, is that correct? I'm thinking that the 18-50 f2.8 would be better all the way around, but especially for low light conditions?:?
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Old Sep 16, 2007, 2:25 PM   #2
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I have no experience with these lenses, but just for your information, there is a 18-50 2.8 HSM version as well. and a 17-70 non hsm ( i think).
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Old Sep 16, 2007, 5:59 PM   #3
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I've been using the 17-70 HSM for about two weeks and love it- nice and sharp, good color, solid build. Sorry but I have no experience with the 18-50 to compare it.
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Old Sep 17, 2007, 5:36 AM   #4
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the 18-50 hsm (and non-hsm, but i suggest you get the hsm one) has a constant aperture of 2.8, wich rules.
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Old Sep 17, 2007, 8:06 AM   #5
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SuiteFreak wrote:
Quote:
It's my understanding that the HSM designation basically means it'll work for d40 users, so I don't really need to worry about that since I have a d80, is that correct?
Sigma's HSM stands for Hypersonic Motor, which is similar to Nikon's AF-S (Silent Wave Motor).

This means that the lens has a high speed focus motor built into it. That usually allows for both faster and quieter focusing compared to using the focus motor built into the camera body. So, if the price is close, I'd get the HSM version of a Sigma lens.

Both the Sigma 18-50mm f/2.8 and 17-70mm f/2.-4.5 both have HSM versions available now.

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Old Sep 17, 2007, 8:56 AM   #6
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also try Tamrons 17-50mmF2.8 DII lens, which I heard not a bad perfromer as well.
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