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The Nikon PROSTAFF 5 Fieldscope 82 (no eyepiece) are the basic models of Nikon's Fieldscope series of monoculars and the successor to the RA III series. The bodies of the Fieldscope PROSTAFF 5 monoculars are 20% lighter than the currently used RA III monoculars. The new lens with eyepiece zoom minimizes color defects at the edge of the field of view and offers a large hanging exit pupil for comfortable observation.
Three types of Digiscoping-compatible eyepiece lenses that can be attached to various COOLPIX series compact digital camera models using the FSB series digital camera mount.
The Nikon PROSTAFF 5 Fieldscope 82 (no eyepiece) are the basic models of Nikon's Fieldscope series of monoculars and the successor to the RA III series. The bodies of the Fieldscope PROSTAFF 5 monoculars are 20% lighter than the currently used RA III monoculars. The new lens with eyepiece zoom minimizes color defects at the edge of the field of view and offers a large hanging exit pupil for comfortable observation.
Three types of Digiscoping-compatible eyepiece lenses that can be attached to various COOLPIX series compact digital camera models using the FSB series digital camera mount.
Objective diameter | 82mm |
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Dimension | 37.7 x 9.5 x 11.5cm |
Weight | 0.95 kg |
Type | Straight |
Shortest focusing distance | 6.1m |
Optical layers, optics | Fully covered with more layers, layers for phase correction |
Watertightness | Nitrogen filling against fogging; waterproof to a depth of 1 m for 10 minutes |
Tripod screw holes | 2 screw holes to balance the body when using FSA-L2 + D-SLR digital single-lens reflex cameras or Digiscoping systems |
Eyepiece mount | Bayonet |
Built-in retractable sun visor | Yes |
Compatible with currently used RA III series eyepieces | Yes |