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Oberwerk 20x60 Binoculars
ry much- but 60mm objectives gather 30% more light than 50mm models (surface area = pi*r2). With that much extra light-gathering power these are ideal for a low-cost entry into binocular astronomy. They are also excellent for birding nautical applications and surveillance. Not only do you get big 60mm objectives - you get the same highest-quality BAK4 prisms that are found in much more expensive models. These are available in your choice of either 9x 12x 15x ...
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- Oberwerk 20x60 Binoculars - description |