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FORUMS Canon Cameras, Lenses & Accessories Canon EF and EF-S Lenses 
Thread started 21 Feb 2012 (Tuesday) 07:28
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Sigma 17-50mm is good or not?

 
pkilla
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Feb 22, 2012 08:24 |  #16

Tony-S wrote in post #13937967 (external link)
From infinity to minimum (and back) the Canon is a bit faster. The advantage of ring-USM vs. micro-HSM. Also, the Canon has full-time manual focus whilst the Sigma does not.

what do u mean by it doesn't have full-time manual
Focus


T3i griped - rokinon 8mm/rokinon 35 1.4/rokinon 85mm 1.4/
sigma 17-50/nikon 50mm 1.2 ai-s/nikon 28mm ai-s 2.8/
helios 40-2/helios 44-2/mir 1b 37mm 2.8/supertak 135/
trioplan/http://www.flickr.com/​photos/pkilla617/ (external link)
CHECK OUT MY BLOG PICS http://pkilla61.blogsp​ot.com/ (external link)

  
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Tony-S
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Feb 22, 2012 08:36 |  #17

When the lens is set to autofocus you cannot override its focus lock by turning the focus ring. With the Canon you can. It's nice but not something I use very often.


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pkilla
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Feb 22, 2012 08:51 |  #18

@tony s OK thanks that don't really matter to me that's nothing


T3i griped - rokinon 8mm/rokinon 35 1.4/rokinon 85mm 1.4/
sigma 17-50/nikon 50mm 1.2 ai-s/nikon 28mm ai-s 2.8/
helios 40-2/helios 44-2/mir 1b 37mm 2.8/supertak 135/
trioplan/http://www.flickr.com/​photos/pkilla617/ (external link)
CHECK OUT MY BLOG PICS http://pkilla61.blogsp​ot.com/ (external link)

  
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ktownhero
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Feb 22, 2012 13:17 |  #19

The Sigma 17-50 OS HSM is an absolutely stunning lens. I bought it about 7 months ago and it has been glued to my camera ever since. I can't recommend it enough.




  
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Rocky ­ Rhode
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Feb 22, 2012 14:23 as a reply to  @ ktownhero's post |  #20

As others have stated, this lens is a real gem. I had very high expectations of this lens after the purchase of the Sigma 70-200 OS; not once have I found myself saying I sure wish I had spent another $400 for the Canon.


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Sigma 17-50mm is good or not?
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