Just a quick note that may be usefull to ice in space readers,it cost me
alot to learn it,I recently bought a canon 450D D/SLR,it is lovely,i spent
over $1100 on a sigma 120 to 400mm lens,and well what a disaster!the
lens had many issues,didnt focus quickly,OS was slow.
I felt it was a "dud" and promptly returned it to retailer,only to be told
this is how it functions,and i wasnt entitled to a full exchange,i have
lost a considerable amount in only one week.Those contemplating buying
any sigma lens,think carefully!,if you own a Nikon,canon,pentax etc and used
it manufatureres lenses,stick to them,dont try and save money on
a "cheaper"lens, otherwise you will end up disappointed,and out of
pocket.
regards Chris
