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Old Feb 5, 2007, 3:03 PM   #1
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i am considering a wide-angle zoom for my 30D, for occasional use in landscape work. i emphasize occasional, since i seldom need a really wide lens, but there are times when it would be nice to have. because i don't plan to use it all that often, i don't want to dump a ton of cash - that means no 17-40L's, etc. the lenses i am considering are all in the $300-$500 range:

Tamron SP AF 17-35 f2.8-4 - i've read good reviews, and it's reasonably priced. i've had excellent results with my Tamron SP AF 24-135, and this would be a nice complementary lens...

Tamron 17-50 Di II f2.8 - not as cheap as the 17-35, but it's f2.8 constant. not sure how much that matters, but it might. offers more reach than the 17-35, which means perhaps fewer lens changes, but it's also limited to APS-C bodies, which means if i upgrade to a full-frame at some point in the future, i wouldn't be able to use it. and because it's an APS-only lens, it's a bit more prone to vignetting wide open...

Sigma EX DC 18-50 f2.8 - good reviews, f2.8 constant, and reasonably priced. i've had good luck with my EX 80-400, so i have confidence in the Sigma EX series lenses. not quite as wide a view as the others, but how much difference does 1mm really make, anyway

Sigma EX DG 15-30 f3.5-4.5 - the slowest of the three, and the most expensive, but it offers a wider view (24mm equivalent vs 28mm). how much that might matter in practice, i don't know.

Does anyone have a recommendation as to which of these might be the best option? personal experience? comments? any and all advice welcome!



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Old Feb 5, 2007, 4:15 PM   #2
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i am going to add two mroe lenses for confusion

the sigma 17-70

and soon to come(dont ask me when) tokina 16-50 for around 500bucks

if u already have something in the 24mm range, u shud also try sigma 12-24. It works magic even in FF.

this one taken at 12mm in a 5D. Not the best of shots..very flat..but still a perspective.

http://www.flickr.com/photos/godvivek/354598038/

This lens is around 545 in 47th street photo. around 599 in B and H before tax and shipping.

Also u shud consider 12-24 from tokina. This is specific to Cropped sensor.

Sorry for confusing..too many to choose
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Old Feb 5, 2007, 4:36 PM   #3
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thanks. i'm not sure whether i want an APS-only lens or not, and the 17-70 is pretty comparably to the Tamron 17-50 - a bit more zoom, but without the advantage of the f2.8 constant aperture. and since i have a 24-135, the added 20mm on this lens isn't all that important... the Sigma looks perhaps a bit better in terms of distortion and CA, but shows more vignetting. decisions, decisions! :angry:

i don't need anything as wide as the 12-24, and that lens seems burdened with a pretty heavy penalty in terms of distortion and CA. i'd prefer to stay in the 17-35 or 17-70 focal range, if possible...
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Old Feb 5, 2007, 4:52 PM   #4
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I have the Sigma 18-50mm and I'm pretty happy with it. When compairing these lenses for shooting landscapes the wide f2.8 aperture is not that important for landscape shots as you will always want to stop down your lens to keep things in focus. I do have the Tokina 12-24 f4 that I use more often for landscapes than I do the Sigma.
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Old Feb 5, 2007, 8:37 PM   #5
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squirl033 wrote:
Quote:
i don't need anything as wide as the 12-24, and that lens seems burdened with a pretty heavy penalty in terms of distortion and CA. i'd prefer to stay in the 17-35 or 17-70 focal range, if possible...
Well I have the 17-35 f/2.8-4 EX as well: http://www.sigmaphoto.com/lenses/len...mp;navigator=1


Along with the 12-24mm they are the only Sigma full-frame wide lens with HSM; However, I tend to use my 12-24 much more often than the 17-35mm... even on the 1.3x camera because of the dramatic super WA effect (for example 17mm is not wide enough for this shot):






-> The 15-30 f3.5-4.5 is a legendary lens though in its former days (with full-frame film Nikon bodies), but do not come with HSM
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Old Feb 5, 2007, 10:08 PM   #6
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You can get good landscape results with the EF-S 18-55mm f3.5-5.6 kit lens when stopped down. You can pick one up for next to nothing from people selling them to upgrade because they think it is a crappy lens.
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