Originally Posted by susan12
Hi all - I've got a quick noobie question about lenses.
I've been thinking about buying a Canon 70-300mm lens but having been speaking to a few people wh have suggested that a similar Sigma lens not only offers better value but actually has better quality too.
I'd be interested to get some feedback from you guys on here as to wheth that's true or not.
As Ian indicated I was a long time user of Sigma lenses on a my Canon system from the 10D through to a 7D.
Firstly if you are contemplating Canon L lenses their professional line up they are stronger built than Sigma EX range their pro lenses, but a third to double the price.
Optically at least with the lenses I owned the Sigma were excellent, and matched Canon in the real world. Lab tested Canon shaded it, but as I said in daily use you cannot see a difference.
Sigma's EX lenses are what I have had experienced with and recommend.
Sigma's none EX lenses are much cheaper and as far as I am aware are good but not exceptional, no more I believe are the none L Canon lenses, in fact their kit lenses are considered unremarkable.
Yes I can recommend Sigma EX lenses, unfortunately I know little about the Zoom range you are looking for on either brand, I personally have avoided too large a zoom range in one lens, it's always a compromise. That said I have now a Panasonic 14-140 4/3 zoom the equivalent on full frame of 28-280 and its a wonderfully piece of glass, so perhaps I have been wrong all these years.