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Old Jun 21, 2006, 2:09 PM   #1
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I currently have a Rebel XT with a 17-85 canon lens as my carry around lens. I'm looking for a lens that would be used mostly for portraits of the little ones and chasing them around with the camera. What I want most is a very sharp lens. I notice the 17-85 can be real sharp and other times its not. Any thought would be great. Not looking to spend big money. But up to 500 is fine. Thanks in advance.
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Old Jun 21, 2006, 2:47 PM   #2
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Canon's EF 28-135mm f3.5-5.6 IS USM Lens is what I recommend you consider.
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Old Jun 21, 2006, 3:18 PM   #3
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I'm not sure if you need any other lens... You did not elaborate in what condition the images are not sharp: Could it be in low light where the IS can not compensate for the subject movement?
-> where a faster lens might help may be

But getting the EF 28-135mm f3.5-5.6 IS USM is not going to solve that problem. I don't believe it's going to be any sharper than your current lens in term of MTF, and the shutter speed will still be in the same ballpark as your old lens if that's the case :?
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Old Jun 21, 2006, 3:50 PM   #4
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It is in lower light situations that the images are not as sharp. Mostly indoors with lamp light and outdoors when the sun is going down. I like the extra reach the 135 would give me but its not imperative. Thanks in advance...
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Old Jun 21, 2006, 4:53 PM   #5
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rvicoli wrote:
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It is in lower light situations that the images are not as sharp. Mostly indoors with lamp light and outdoors when the sun is going down...
That's what I suspected

Getting another lens with the same apertures value is not going to help... Have you try to increase the ISO or turn on the flash (for portraits)? What you really need is a faster (i.e. brighter) lens such as an f/1.8 (or f/2.8 in a zoom) to increase the shutter speed which is the real culprit:
-> your EF 17-85 is fine but the IS is not going to stop subject(s) movements :idea:
(in which case the 135mm will make it even worst since the shutter speed required will be even higher)
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Old Jun 21, 2006, 6:21 PM   #6
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Have any thoughts on a lens that would be in my price range?
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Old Jun 21, 2006, 8:30 PM   #7
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rvicoli wrote:
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Have any thoughts on a lens that would be in my price range?
That would leave out the EF-s 17-55mm f/2.8 IS USM then :-)

I would get a 50mm f/1.8 for portrait (and low-light) then, it's probably the best $80 you'll ever spend!
... and if you still don't like the 17-85, you can always replace it with a faster 18-50 f/2.8 (or Tamron 17-50 f/2.8 ): http://www.pbase.com/lightrules/zoomvprimes

-> Also Tokina is due to release a 16-50mm f/2.8 shortly :idea:

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Old Jun 21, 2006, 8:43 PM   #8
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I've seen the tamron 28-75 f/2.8 being used a lot at pbase.com when it comes to portraits.

However, I tried it in a store and the motor sounds like nails on a chalkboard IMO. Definitely not a pleasent sound if you're used to USM/HSM. I do not doubt the optics, just the build.

There's also the sigma 24-70 f/2.8, sigma 18-50 f/2.8, tamron 17-50 f/2.8, tokina 16-50 f/2.8 (actually, I don't think this one is out yet). The lenses that cover the wide angles are more expensive.

Or you can try your luck with primes. I also noticed the 17-85 is kind of dissapointing in low light, but I have the sigma 30 f/1.4 and ef 85 f/1.8 and they're fun to use.

I've taken pictures of my baby cousin and some of his friends. Indoors, they don't have a lot of area to run around ( or at least where I was ) so the sigma 30 was fine most of the time. I'll admit, there were times I wanted a wider angle or a longer one, but I was using apertures GREATER than f/2.8 to keep high shutters. You just need to be careful of the thin DOF.
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Old Jun 21, 2006, 8:51 PM   #9
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Yeap

I forgot about the Sigma 30mm f/1.4 EX HSM
-> If you want to spend your money on only one lens then that's THE lens to get!
http://www.pbase.com/cameras/sigma/30_14_ex_dc_hsm
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