Kowa Prominar TD-1, 3mp, 450-1350 f2.8-4 zoom

[John Mustarde]

450-1350/f2.8-4... Now that's a zoom.  But how can it be?  I thought
1350mm/f4 would require a front element about 337mm in diameter. 

http://www.dpreview.com/news/0406/04062402kowprominartd1.asp



--
John Mustarde
www.photolin.com