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Kowa Prominar TSN663-ED

62mm, Waterproof

Michael and Diane Porter and a team of Iowa birders tested 24 spotting scopes for a review in the March, 2003, issue of Bird Watcher's Digest. This account is part of that review.

Kowa scopeThe 62mm Kowa has excellent optical qualities. We looked at the angled ED version, which incorporates fluorite glass elements in the objective lens to reduce chromatic aberration.

The body is grey and tan, with a raised-line sight on the side and with a decorative, thin red ring around the barrel near the extensible sunshade. It comes in angled and straight-through designs; lower-cost versions of both models are available without the fluorite glass.

Although the Kowa’s eye relief of 22mm is good at 20x, the eye relief is only 11mm at 60x, and so at 60x, a user who wears glasses will see only the center of the field of view.

Eyepiece is purchased separately.

More scopes reviews 60mm

More scopes reviews 80mm

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