Just after some advice on buying this lens, i have the canon 550D and really considering buying this lens, but my question is, will i be able to use this lens to its full potential? is it too big for a crop body dslr? as ive heard it can put stress on the mounting ring? is it worth me selling my 55-250mm lens to put the money towards this?
Im finding it hard to make my mind up, so any help and advice would be greatly appreciated.
Regards
Shaun
Im finding it hard to make my mind up, so any help and advice would be greatly appreciated.

Regards
Shaun
:nuts:

