I am interested in purchasing this lens to use with my 2 Canon cameras (20d and rebel 300d). I would love to get the Canon version of the lens but simply can't afford it yet. Will I regret buying this lens? I shoot portrait photography.
www.photographybyjoyelle.com Read what Ken Rockwell has to say about third party lens manufacturers, specifically Sigma. After you read his views what I have to say will make more sense to you.
http://www.kenrockwell.com/tech.htm
More from Ken ... "The Sigma and sometimes the Tamron can have serious problem when using any sensor on my D200 other than the very center. Sometimes the Sigma won't lock focus with a side sensor. This means your D200 most likely (depending on your settings) won't shoot! In most modes the D200 needs to confirm focus before releasing the shutter. Often the Sigma won't focus perfectly enough with the side sensors, and will lock up the camera. This makes sense: the Sigma is generally the softest lens of the group. The D200 demands quality optics. If the Sigma can't get sharp enough in the sides to convince the D200 that it's in focus then the D200 won't turn on the green focus confirmation dot on the lower left of the finder and won't release the shutter! Look out for this, since when it first happened to me it confused me for quite a while."
Both Canon and Nikon cameras are precision instruments, so demand more from lenses and other accessories you may want to hang on them
You are almost always better off buying a good used lens made by the maker of your camera than buying a new one made by a third party. Photozone's Lens Performance Survey rates this item 2.55 (Average). www.photozone.de
Photodo has no MTF score on it. There's only one user review. www.photozone.com
Here's a test of it vs. Tokina: http://www.tawbaware.com/sigma_tokina_te...
Rockwell has some issues with it, but remember, Ken contradicts himself every other paragraph.
Hope this helps. | 