[DuncanE]

I have this lens and I have used it for animal work - anything i'm likely to get close to, or subjects no more than 5 metres away. I have submitted pics here using it.

Its a cracking lens and gives good results. Although due to its weight i wouldn't use it for street work.

I have used it at the f2.8 end often (probably incorrectly most of the time), but depends on the light and the ISO i use. but I usually have it set anywhere between f4 and f8.