Spotting scope 觀鳥鏡          

ED50A只重470克，長207mm U$599

Fieldscope III / Fieldscope III A Fieldscope EDIII / Fieldscope EDIII A Waterproof and fog-free with O-ring seals and nitorogen gas All lenses and prisms are multilayer coated for the brightest images Built-in type slide hood Angled body type for easy viewing and comfortable sketching Extra-low dispersion (ED) glass for colour aberration compensation and brighter, clearer viewing (EDIII / EDIII A) Eight different eyepieces compatible (see specifications)               Thanks to Nikon's advanced prism design, with angled body types, you get the same brightness found in straight body types

The numerical value of each of the above Fieldscopes is one when using a 20x / 25x eyepice. III III A EDIII EDIII A Magnification (x) 20 Effective objective diameter (mm) 60 Angular field of view (Real / degree) 3.0 Angular field of view (Apparent / degree) 60.0 Field of view at 1,000 m 52 Exit pupil (mm) 3.0 Relative Brightness 9.0 Eyerelief (mm) 15.2 Close focusing distance (m) 5.0 Weight (g) 1,080* 1,180* 1,090* 1,190* Length (mm) 279* 291* 279* 291* Width (mm) 80* 94* 80* 94* Type *body only

Fieldscope ED78 / Fieldscope ED78 A 78mm objective diameter for a brighter viewfield Magnesium-alloy and construction for a sturdy, compact and lightweight body Multilayer coated lenses made of ED glass compensate aberration and improve brightness and resolution O-ring seals for water resistance Same eyepieces as other scopes in the Fieldscope series can be used (magnifications become higher-see specifications)

The numerical value of each of the above Fieldscopes is one when using a 20x / 25x eyepice. Fieldscope ED78 Fieldscope ED78 A Magnification (x) 25 Objective diameter (mm) 78 Angular field of view (Real / degree) 2.4 Angular field of view (Apparent / degree) 60.0 Field of view at 1,000m (m) 42 Exit pupil (mm) 3.1 Relative brightness 9.7 Eye relief (mm) 15.2 Close focusing distance (m) 5.0 Weight (g) *1,355 *1,530 Length (mm) *366 *365 Width (mm) *90 *100 Type *body only

Eyepieces for Fieldscopes

• All lenses are multilayer coated for maximum brightness of view field. “MC”stands for Multilayer Coating. • Turn-slide rubber eyecup is applied to the wide type eyepiece for comfortable viewing. It helps you position your eyes at the correct eyepoint. • Optics employ Eco-glass containing no arsenic or lead. (The first number indicates the magnification when used with a 60mm diameter objective model; the second number, with a 78mm diameter objective model.)

With Fieldscope III / ED III / III A / EDIII A (1) 20x/ 25x MC 40x/ 50x MC 24x/ 30x wide MC *2 30x/ 38x wide MC *2 40x/ 50x wide MC *2 60x/ 75x wide MC *2 20-45x/ 25-56x zoom MC *2 20-60x/ 25-75x zoom MC Magnification (x) 20 40 24 30 40 60 20-45 20-60 Angular field of view (Real / degree) 3.0 1.1 3.0 2.4 1.8 1.2 2.0 (at 20x) 2 (at 20x) Angular field of view (Apparent / degree) 60 44 72 40 (at 20x) 40 (at 20x) Field of view at 1,000m (m) 52 19 52 42 31 21 35 (at 20x) 35 (at 20x) Exit pupil (mm) 3.0 1.5 2.5 2.0 1.5 1.0 3.0 (at 20x) 3 (at 20x) Relative brightness 9.0 2.3 6.3 4.0 2.3 1.0 9.0 (at 20x) 9 (at 20x) Length (mm)*1 52 24 48 77 75 72 76 73 Width (mm)*1 38 36 51 39 48 weight (g)*1 75 35 145 160 165 175 100 155 *1 eyepiece only *2 These eyepieces are not to be used for Fieldscope I series. 　   With Fieldscope ED78 / ED78 A 20x/ 25x MC 40x/ 50x MC 24x/ 30x wide MC *2 30x/ 38x wide MC *2 40x/ 50x wide MC *2 60x/ 75x wide MC *2 20-45x/ 25-56x zoom MC *2 20-60x/ 25-75x zoom MC Magnification (x) 25 50 30 38 50 75 25-56 25-75 Angular field of view (Real / degree) 2.4 0.88 2.4 1.9 1.44 0.96 1.6 (at 25x) 1.6 (at 25x) Angular field of view (Apparent / degree) 60 44 72 40 (at 25x) 40 (at 25x) Field of view at 1,000m (m) 42 15 42 33 25 17 28 (at 25x) 28 (at 25x) Exit pupil (mm) 3.1 1.6 2.6 2.1 1.6 1.0 3.1 (at 25x) 3.1 (at 25x) Relative brightness 9.6 2.6 6.8 4.4 2.6 1.0 9.6 (at 25x) 9.6 (at 25x) Length (mm)*1 52 24 48 77 75 72 76 73 Width (mm)*1 38 36 51 39 48 weight (g)*1 75 35 145 160 165 175 100 155 *1 eyepiece only *2 These eyepieces are not to be used for Fieldscope I series.