I have been offered one of these : Sigma 50-500mm 4-6.3 EX APO RF HSM for five hundred quid. It is in mint condition but I am unable to test it on my camera. I use Nikon gear and not familiar with the lettering of a Sigma. Can you tell me what EX and RF stands for?
I have found plenty of info about this lens and most of it positive but is there anyone on here who owns/uses one of these and are you getting good results?
Thanks in anticipationÂ…..Bri :|
I have found plenty of info about this lens and most of it positive but is there anyone on here who owns/uses one of these and are you getting good results?
Thanks in anticipationÂ…..Bri :|