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Old Jul 18, 2006, 8:13 PM   #1
SMG
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Just wondering if the Sigma lense would be ok for everyday use as it would allow me to still do some macro shots. I tried the lense this afternoon at the local shop, and was blown away. It was way faster than either of the D50 kit lenses.



Your thoughts please,



Cheers,

SMG
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Old Jul 18, 2006, 9:44 PM   #2
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I own a Sigma 30mm F 1.4 lens that I use for existing light situations, and I have been really pleased with the lens.

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Old Jul 19, 2006, 1:03 AM   #3
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Yeah, not a bad lens but unfortunately you only get F2.8 up to 20mm, from there, the aperture decreases, so it's not very bright.
I made a list of F2.8 lenses for the Nikon mount and their afferent prices here: http://www.stevesforums.com/forums/v...59&forum_id=66
I was looking at the Tamron, because it delivers F2.8 aperture from 17mm to 50mm.
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Old Jul 20, 2006, 7:40 AM   #4
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The 17-70mm f/2.8-4.5 is basicly an upgraded kit lens. It's slightly wider, slightly longer, and slightly faster. It's a fairly noticable step up from the 18-55mm kit lens but only a very slight step up from the 18-70mm (you pick up a half stop on the wide end but lose AF-S). It's not a bad lens, reports on it have been good, but I would likely sacrifice the added range and go w/ a constant f/2.8, something like the Tamron 17-50mm f/2.8, Sigma 18-50mm f/2.8, or the Tokina 16-50mm f/2.8 when it comes out. If you like the long end more than the wide end then a used 24/28-70mm f/2.8 or maybe a 24/28-105mm f/2.8 might work well for you.
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Old Jul 20, 2006, 8:00 AM   #5
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Stephen, when's that Tokina coming out, man?
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Old Jul 21, 2006, 9:22 AM   #6
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It was anounced a few weeks ago and product pictures are already popping up. My guess is sometime early in the fall... maybe September. I'm holding out for that one unless I find a good used deal on the Tamron 17-50mm f/2.8 or the Sigma 18-50mm f/2.8. I have a feeling, though, that the Tokina will more likely be in the $550 range where the Tamron and Sigma are in the $400 range. The Tokina will, however, much more closely match the build quality of the $1400 Nikkor 17-55mm f/2.8 ED DX.
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Old Jul 21, 2006, 10:34 AM   #7
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I guess that I wasn't clear enough in my original post. My idea is to use the Sigma for every day and macro work, which I don't think that the Nikon 18-70 D70 lense offers. I would be picking up a telephoto lense at some point in the future. But I do like the added range of this lense over the 18-55 kit lense.

If the Nikon 18-70 lense would do macro work as well as the Sigma, no contest I would buy it in a minute. Heck it would benearly the same price at my local store anyway.

You have to excuse my noobiness, what is AF-S and why is it important?



Thanks

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Old Jul 31, 2006, 2:21 PM   #8
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AF-S is Nikon's on-lens sonic focusing motor that can speed up auto-focus as well as make it much quieter (as opposed to screw-drive AF on most lenses). Sigma's equivalent of AF-S is HSM (Hyper Sonic Motor) but it is not a feature included in the 17-70mm. It's only on a select few Sigma EX lenses.
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