what is the difference between this lens
http://www.bhphotovideo.com/bnh/controller/home?O=&sku=755329&is=USA&Q=&A=details
$2500
and this lens
http://www.bhphotovideo.com/bnh/controller/home?O=&sku=909811&is=REG&A=details&Q=
$3500
Lenstip liked the new one....
it seems that one could confuse these two..
except for the price difference
what has changed?
did I miss something ?
I do notice the different looking BUILD
thanks for help here
TOM
http://www.bhphotovideo.com/bnh/controller/home?O=&sku=755329&is=USA&Q=&A=details
$2500
and this lens
http://www.bhphotovideo.com/bnh/controller/home?O=&sku=909811&is=REG&A=details&Q=
$3500
Lenstip liked the new one....
it seems that one could confuse these two..
except for the price difference
what has changed?
did I miss something ?
I do notice the different looking BUILD
thanks for help here
TOM