Which Sigma lens ?
Mar 19, 2012 18:00:43 #
My camera is a Canon Rebel T1i , I would like to have a f2.8 lens. What is the difference between the Sigmas, 18-50 f2.8-45 DC OS HSM & 17-50 f2.8 EX DC OS HSM besides the price?
Mar 19, 2012 18:15:43 #
The second one is one mm wider, but more importantly, it is a constant maximum aperture (f/2.8) throughout the entire zoom range. The first lens has a max f/2.8 at 18mm but it decreases to f/4.5 by the time you get to 50mm.
Mar 20, 2012 07:58:02 #
jamesrd wrote:
My camera is a Canon Rebel T1i , I would like to have a f2.8 lens. What is the difference between the Sigmas, 18-50 f2.8-45 DC OS HSM & 17-50 f2.8 EX DC OS HSM besides the price?
Go to dpreview.com and kenrockwell.com and search for info on these lenses. You can also do a Google search for reviews. All reviews are not created equal, however. Some reviewers don't know what they're talking about, and others like everything they pick up.
Mar 20, 2012 09:05:12 #
I own the Sigma 17-50mm f/2.8 lens, and find it a superior product. But you should read and decide for yourself:
Lens Review Web Sites
http://www.the-digital-picture.com/Reviews/
http://www.dpreview.com/
http://www.lenstip.com/
http://www.photozone.de/
Lens Review Web Sites
http://www.the-digital-picture.com/Reviews/
http://www.dpreview.com/
http://www.lenstip.com/
http://www.photozone.de/
jamesrd wrote:
My camera is a Canon Rebel T1i , I would like to have a f2.8 lens. What is the difference between the Sigmas, 18-50 f2.8-45 DC OS HSM & 17-50 f2.8 EX DC OS HSM besides the price?
Mar 20, 2012 19:42:51 #
Mar 20, 2012 19:43:51 #
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