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Old Jan 16, 2010, 1:10 PM   #1
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Default Sigma 18-50mm f2.8-4.5 DC OS HSM for a Canon 30D

Sigma 18-50mm f2.8-4.5 DC OS HSM

These lenses appear available, on the market, MSRP of $500, are usually discounted... and have very, very few reviews. It's as though they are the "mystery lens". I don't know if that is because they are junk or they are great... but they are definity below the radar.

Does anyone have any insights????

Thanks !
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Old Jan 16, 2010, 1:41 PM   #2
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There are a couple other third party, stabilzed standard zoom lenses available, but this one is certainly the price leader at $299 at Adorama.

As I see it, the problem with this lens is that it doesn't offer much that would make it more desireable than Canon's 18-55 IS kit lens. The Sigma is 2/3 stop faster and has less chromatic aberration, but it's $130 more expensive. So even if you don't already have Canon's stabilized kit lens, there's not much reason to pick up the Sigma instead.
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Old Jan 16, 2010, 5:33 PM   #3
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Yes, it appears close to the kit lens. However, if you didn't have the kit lens... at this one was $199 on Amazon, that appears to be a reasonable price/performance tradeoff for an average shooter... just can't find a whole lot of information about it.
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Old Jan 16, 2010, 7:07 PM   #4
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This is as much as I've been able to find on it:

Sigma 18-50mm f/2.8-4.5 DC OS HSM (Tested)
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Old Jan 16, 2010, 7:55 PM   #5
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That's about the one and only test I found. Looks like the 17-50 Tamron is "bettter" for the most part, however, at current street prices, at least twice the cost if not a bit more.
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Old Jan 16, 2010, 9:06 PM   #6
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The Tamron 17-50/2.8 is better but it's not stabilized, and no one has tested the $600 VC version yet. I'm waiting for when they do.
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Old Jan 16, 2010, 11:47 PM   #7
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My guess, and it is only that..., is that the 18-50mm is a marketing stop gap type lens while the 17-70 ramps up. And the majority of the focus (all puns intended) will to the 17-70mm in the future.

Would I prefer 17-70mm over 18-50mm? You bet. But, those 17-70's are 3 times the price for the OS version. Frankly, a 35mm equivalent 29mm-80mm covers a lot of ground for me. I try to shoot gymnasium shots, mostly volleyball. Having 2.8 capability is great. I shoot ISO 1000 to 1600 depending on the gym lighting and since I don't blow up the results to a poster size it works ok. The OS has got to help to some degree.

Yes, I am rationalizing this left and right. I just found new ones for $179 delivered, no tax. Argh...
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Old Jan 17, 2010, 7:47 AM   #8
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It's possible that Sigma put this one together so their dSLRs could have a stabilized kit lens. It's good, but I don't think it's good enough that people will abandon the kit lenses they've got.
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Old Jan 17, 2010, 11:34 AM   #9
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Agreed. This is for someone who does not have the kit lens (bought the body separate for whatever reason...)
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