Skeptical. Honestly, when my favourite salesman mentioned this lens in the same breath as 100-400L and 70-200 f/4, I thought he had inhaled too many chemicals in the darkroom. Just to humour him, I played around with one in his shop and basically said something about pigs flying before I shelled out 760 US for flimsy lens like that.
I checked out the review forum here (a must before any purchase) and went out and ordered a siding of fries to go with those hard words I now had to eat.
Very nice lens. Bye, bye 70-200 f/4. I hate to say it, but this gives me better results than my (former) all time favourite lens. Sharp, light, inconspicous and fantastic IS make it a winner.
I just don't understand the hood thing. Honestly, why do they have to make an exclusive hood? don't tell me it needs to be different than the 75-300? Surely... Anyway, I bought it and ordered a hood. Almost one month later, not even Canon can give me one! Whats up with that?