Originally Posted by phorwath
Have you looked through any of the smaller/lighter Kowa Prominar models, and if so, are they as impressive as the 88mm?
The 88mm is the best, due to its large true flourite crystal objective lens element. The smaller objective Prominar models won't be quite as good due to the fact the lens elements are XD glass and of a smaller objective diameter. However, they are still quite excellent and I'd put the smaller Prominar models up against anything in their class. Keep in mind the Kowa's 88 and 77mm models are a new compact dual focus design and are state of the art.
I have tested the Kowa ED 663 model and it was superior to the Nikon ED50 (not really a fair test) but you know I love the Nikon ED50 (my current range spotter).
Kowa Prominar....buy with confidence.