My current lens is the Canon 24-85mm. In addition to the lens that came with my Digital Rebel kit, these are the only 2 I own so far.
I've been in a number of situations now where I would have loved more telephoto zoom capability, so I'm considering to purchase a 70-200mm lens in the near future. I've read many great reviews on 3 lenses: Canon f2.8L USM IS ($1600), Canon f4.0L USM ($550), and the Sigma APO EX HSM ($739). All prices are by B&H.
I do like to do early morning and late evening shots, and even some night shots which seems to make the f2.8 options attractive, as well as the IS capability. Sigma seems like the best compromise here (f2.8, no IS capability, good price). The Canon f2.8L IS is tantalizing, but the cost! Ai, carumba. Honestly, I could afford the 2.8L but I don't want to spend that money on that lens if others offer a good alternative at lower cost.
Is the Sigma lens comparable in quality to the Canons? I would love to hear from your experiences... also, anyone used converters with them? Results?
Thanks in advance,
Stew