Google is your friend.
U.S sites have alot of info
50 HZ would be smooth image, crisp with fluid motion. 30 hz a little less. maybe slight blur. small judder with image.
Thanks, I tried google before posting. Figured there'd be no harm in asking about them in the dealer's thread. They're not the cheapest optic. I guess all I'm really after is, are the differences between the optics worth the difference in price? Would prefer to hear an opinion from someone with experience running these units.