Nikon Introduces New EDG Fieldscope Series

Nikon Vision Co., Ltd., a subsidiary of Nikon Corporation, is pleased to introduce the EDG Fieldscope series, a new Nikon Sport Optics brand.

EDG is pronounced “edge” because the series provides edge-to-edge brilliance and overall leading-edge performance. The optical and mechanical results of the current fieldscope series, which has won plaudits from users around the world, have been enhanced for the new EDG series. The outstanding performance of EDG Fieldscopes, including natural color reproduction and crisp clarity, has been achieved through the use of Extra-low Dispersion (ED) glass. The straight-type models also feature dielectric high-reflective multilayer prism coating.

Both the main bodies and eyepieces of the EDG Fieldscopes are waterproofed with O-ring seals and nitrogen gas, allowing EDG Fieldscopes to be used in adverse weather conditions. Seven kinds of eyepiece are available, providing unparalleled performance in differing environments. The newly developed zoom eyepiece in particular offers superb optical performance with minimized distortion and long eye relief (18.4-16.5mm).

 

Key Features

• Nikon’s ED (Extra-low Dispersion) glass for chromatic aberration compensation
• Phase correction coated roof prism for high resolution
• Dielectric high-reflective multilayer prism coating on roof prism for the brightest view (straight models only)
• All lenses and prisms are multilayer-coated for the brightest images
• Bayonet mount with lock for EDG eyepieces
• Fog-free and waterproof up to 2 m for 10 min.—thanks to use of O-rings and nitrogen gas (water-resistant main body/eyepiece joint)
• New and stylish design
• Three tripod mount screw holes provided for flexible mounting position; optimum balance realized by CAE (Computer Aided Engineering)

EDG Fieldscope Specifications

	EDG Fieldscope 85	EDG Fieldscope 85-A	EDG Fieldscope 65	EDG Fieldscope 65-A
Objective diameter (mm)	85	85	65	65
Close focusing distance (m)	5.0	5.0	3.3	3.3
Length (mm)*	379	398	313	332
Height x Width (mm)*	127 x 102	131 x 102	120 x 88	131 x 88
Weight (g)*	2030	2030	1560	1620

Key Features—Eyepiece

• Seven new kinds of eyepieces for optimum optical performance
• Bayonet mount with lock for easy attachment and release
• Fully multilayer coated
• Fog-free and waterproof up to 2 m for 10 min.—thanks to use of O-rings and nitrogen gas (water-resistant main body/eyepiece joint)
• Eyecup moves in and out at turn of eyepiece ring and stops at any of three click-stops to facilitate observation and digiscoping (not applicable to FEP-30W, FEP-25LER and FEP-20-60)
• FEP-30W offers a choice of eyecup: soft rubber cup for observation and digiscoping eyecup for connecting with the Digital Camera Bracket FSB-series
• FEP-25LER has ultra long 32.3 mm eye relief
• FEP-20-60 features long eye relief (18.4-16.5 mm) and minimized distortion with aspherical lens
• Numerous COOLPIX series compact digital cameras can be attached to EDG eyepieces (except FEP-20-60) with digital camera bracket FSB-series

EDG Eyepiece Specifications

	FEP-20W		FEP-30W		FEP-38W		FEP-50W
EDG Fieldscope diameter	85	65	85	65	85	65	85	65
Magnification (x)	20	16	30	24	38	30	50	40
Real field of view (degree)	3.3	4.1	2.4	3.0	1.9	2.4	1.4	1.8
Apparent field of view (degree)*1	60	60	64.3	64.3	64.3	64.3	64.3	64.3
Field of view at 1,000 m (m)	58	72	42	52	33	42	24	31
Exit pupil (mm)	4.3	4.1	2.8	2.7	2.2	2.2	1.7	1.6
Relative brightness	18.5	16.8	7.8	7.3	4.8	4.8	2.9	2.6
Eye relief (mm)	20.1	20.1	25.4	25.4	17.9	17.9	17.8	17.8
Length (mm)*3	59	59	81*4	81*4	74	74	71	71
Outer diameter (mm)*3	63	63	63	63	63	63	63	63
Weight (g)*3	240	240	390*4	390*4	230	230	230	230

	FEP-75W		FEP-25LER		FEP-20-60
EDG Fieldscope diameter	85	65	85	65	85	65
Magnification (x)	75	60	25	20	20-60	16-48
Real field of view (degree)	1.0	1.2	2.4	3.0	2.2*2	2.8*2
Apparent field of view (degree)*1	64.3	64.3	55.3	55.3	42*2	42*2
Field of view at 1,000 m (m)	17	21	42	52	38*2	47*2
Exit pupil (mm)	1.1	1.1	3.4	3.3	4.3*2	4.1*2
Relative brightness	1.2	1.2	11.6	10.9	18.5*2	16.8*2
Eye relief (mm)	17	17	32.3	32.3	18.4*2	18.4*2
Length (mm)*3	71	71	77	77	99	99
Outer diameter (mm)*3	63	63	63	63	63	63
Weight (g)*3	230	230	320	320	330	330