01-07-2015, 07:14 AM
Scynthels, you seem to not be aware that the reason for the short length is due to the special nature of the PF element, and that such an element does its work without increased aberrations (and so without the need for extra elements)? same as with the DO elements from Canon.
The new 400mm f2.8E has no such tele ratio, yet also uses 16 elements, in 12 groups. I just found the PR blurb statement funny.
The new 400mm f2.8E has no such tele ratio, yet also uses 16 elements, in 12 groups. I just found the PR blurb statement funny.