if i go to a camera shop, what do i need to look for if i take my 40D with me?

Consider the Tamron 28-75mm too - very sharp lens![]()
That's a factGot a gold ring too....
My next one will be the 150mm Macro![]()

I would go for canon because I have very bad experience with Sigma. As Moos3h said sigma's quality varies a lot and I was quite unlucky and got very soft one.
this is what im thinking. if i do get a "bad" copy (not looking for a problem, the less hassle the better) buy it in a shop or internet merchant?
I had the choice of £220 from HK or £269 over the counter at the local shop. I decided that a 3 year UK warranty and being able to smack the shop round the head with the lens was worth £49![]()
Do you mind if i ask which shop you found it in for that price as im in the market myself![]()