> If Sigma reverse-engineers, they get left behind sooner than Canon's > own products, because they cannot know what points of a specification > in the Canon products are significant. But even Canon products will > eventually get left behind due to innovation.
Henning There is innovation and deviousness. Who is to say Cannon are not reverse engineering Sigma's hack to find flaws which will render Sigma's lenses incompatible with the next model :). Seriously, it's wearing a bit thin that it's happening "by accident". Sigma are doing the best they can FOR THE CUSTOMER. Canon sells cameras on the back of Sigma's lenses so it's crass of them not to cooperate. That said, I would never buy another Sigma lens: I bought three (false economy) early on, sold one, another went phut and the 3rd I couldn't sell for any price. The quality (according to magazine tests) of my remaining Sigma was as good as Canon. The quality from my own photos, compared to a replacement Canon, bears no comparison. Canon stuff is simply better (and even holds some S/H value). B * **** ******* *********************************************************** * For list instructions, including unsubscribe, see: * http://www.a1.nl/phomepag/markerink/eos_list.htm ***********************************************************
