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ronharper
Pooh-Bah
Reged: 02/14/06
Posts: 1007
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Re: Nagler-like performance...
05/08/08 12:12 PM
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Thanks for a very interesting thread. I like 7x50s and have always been curious about the Prostar.
Since somebody asked, the Fujinon 7x50 is no great shakes in this department. The field is rather curved, about 2 diopters from center to edge. Despite it's narrower apparent field, the edge is quite a bit softer than the 10x50.
Henry Link has reported in other forums that the optical train of the Prostar (and its 10x70 sibling) and FMT are very similar except the Prostar has an extra convex lens cemented to the output end of the prisms. Very interesting! Comments, BillC or Henry?
While the Prostar is apparently supreme for edge correction, it's apparent field is only 53 degrees. Several of the second-place binos provide 60-67 degrees. If these were field-stopped to 53 degrees, Ed, would it be a different story?
Ron
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