Hi, i was passing my local camera shop today and noticed he had a used sigma AF 5.6 400mm at a decent price, he told me he thinks it only works on sports mode on a early eos models ,he also had a 500d for sale so he tried the lens on thge 500d which he passed to me to try ,i put it in AV mode at 5.6 and took a few pics and all was fine , i took around 5 pics ,however when he initially tried the lense (not sure what settings he had it on) it did come up with err code ,but after i had it i didnt get any problems , the focus was pretty quick and it is nice and clean.,,,i dont know much about the lense and i cannot try as i dont have my camera at the moment, its a greyish colour and i cannot see APO ,so i presume AF 5.6 -400mm is all it is, i would apreciate it if any one as owned one of these lenses could give me some info.Thanks
Last edited: