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Sep. 1998
In September, 1998 Nikon Corporation introduces its "7×15M CF Black" compact, high-performance binoculars as a 7× magnification, black version of Nikon`s classically elegant, silvery, metal-encased "6x15M CF" binoculars, which debuted in October 1997.
The binoculars are inspired by "MIKRON" binoculars introduced in Japan (Nippon) in 1921, which were renowned for ultra-compact high-quality porro-prism design that evolved up to 1974.
The availability of "MIKRON"--- based binoculars in black or silver casings provide customers with two classic styles to choose between.
Major features
The 7×15M CF Black`s timeless design broke new ground among the binoculars / optics industries in Japan (Nippon), and is as fresh and original today as it ever was.
Focusing is possible as close as 2.0 m from the subject, making it so convenient for museums and other exhibitions.
Specifications
| 7x15M CF Black |
6x15M CF (For reference) |
|
|---|---|---|
| Magnification | 7 × | 6 × |
| Effective objective diameter | 15mm | |
| Real angular field of view | 7.0 degree | 8.0 degree |
| Apparent angular field of view | 49.0 degree | 48.0 degree |
| Field of view at 1,000m | 122 m | 140 m |
| Exit pupil | 2.1 mm | 2.5 mm |
| Brightness | 4.4 | 6.3 |
| Eyerelief | 10.0 mm | 10.1 mm |
| Close focusing distance (approx.) | 2.0 m | |
| Weight (approx.) | 135 g | 130 g |
| Height | 47 mm (lens extended) | 48 mm (lens extended) |
| Width | 108mm (extended) | |
| Pupil distance | 56 to 72mm | |
| Type | Porro | |
