I recently get some chance to shoot events, voluntarily. I really enjoy the process. My major interest is birding and wildlife so I prefer to keep my 7d. I need a lens to couple to the body. Now I got a tamron 17-50 and 17-55 IS. I think I'll shoot several events to decide which one to keep. But meantime I'd really benefit from you guys by asking question here.
Here is my feeling about the two lenses. I feel the IQ of the two lenses is similar. I like the light weight of tamron. I hate the noise on it. The focus is not too bad, but I am not sure it's fast enough to catch the moment. I like the IS of canon, but people are moving during the events and I am not sure how useful that will be. And canon is big, with 3x price, that's a minus for me.
Some of you must owned one or both of the lens and torn by selection. Hope to get feedback from you. Thanks in advance.