is it really that bad? i have read very mixed reviews online. some say it is very soft at 500mm and that AF is slow and loud. but i see a few pics people have taken and they look nice, i would be happy to have taken them. i would describe myself as an amatuer photographer looking for a decent entry into wildlife photography. i have had limited success with my canon 55-250is - some nice pics but just cant sneak close enough most of the time! im on a budget (got a mortgage and a son who's nearly one) so the 50-500 or 150-500 probably isnt going to happen, nevermind a canon 100-400L! i have seen the 170-500's go on the bay for between £200 and £300 which is about all i can stretch to right now. does anyone have a 170-500? should i forget about it and save longer? surely it will suffice for an amateur like me?