Nikon EDG 65, Instruction Manual

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Eyepieces Specifications
Top row: When attached to EDG Fieldscope 85/85-A, Bottom row: When attached to EDG Fieldscope 65/65-A
* The number calculated by the formula [tan ω' = Γ x tan ω ]: Apparent field of view: 2ω', Magnification: Γ, Real field of view: 2ω
** At lowest and highest magnifications
*** With detachable turn-and-slide eyecup
Product code FEP-20W FEP-25LER
FEP-30W*
FEP-38W FEP-50W FEP-75W FEP-20-60
TS ring DS ring
Body WA WB
WD
WE WF WG WC
— —
Mount cap (objective) mounted ECF
Rubber cap (eyepiece) mounted ECG ECL ECG ECG ECL
Rubber eyecup mounted ACM ABY ACN ABY ACM ACN
Case included CCK
* When shipping, turn-and-slide ring (TS ring) is mounted, DS ring set (ring, rubber cap and rubber eyecup) is included in the box.
Models FEP-20W FEP-25LER FEP-30W FEP-38W FEP-50W FEP-75W FEP-20-60
Magnification 20x 25x 30x 38x 50x 75x 20-60x
16x 20x 24x 30x 40x 60x 16-48x
Real field of view 3.3˚ 2.4˚ 2.4˚ 1.9˚ 1.4˚ 1.0˚ 2.2-1.1˚**
4.1˚ 3.0 ˚ 3.0˚ 2.4˚ 1.8˚ 1.2˚ 2.8-1.4˚**
Apparent field of 60˚ 55.3˚ 64.3˚ 64.3˚ 64.3˚ 64.3˚ 42-60˚**
view* 60˚ 55.3˚ 64.3˚ 64.3˚ 64.3˚ 64.3˚ 42-60˚**
Field of view at 58m/173 ft. 42m/126 ft 42m/126 ft. 33m/99 ft. 24m/73 ft. 17m/52 ft. 38-19m/
1,000m/yds. 115-58 ft.**
72m/215 ft. 52m/157 ft. 52m/157 ft. 42m/126 ft. 31m/94 ft. 21m/63 ft. 49-24m/
147-73 ft.**
Exit pupil 4.3mm 3.4mm 2.8mm 2.2mm 1.7mm 1.1mm 4.3-1.4mm**
4.1mm 3.3mm 2.7mm 2.2mm 1.6mm 1.1mm 4.1-1.4mm**
Relative brightness 18.5 11.6 7.8 4.8 2.9 1.2 18.5-2.0**
16.8 10.9 7.3 4.8 2.6 1.2 16.8-2.0**
Eye relief 20.1mm 32.3mm 25.4mm 17.9mm 17.8mm 17.0mm 18.4-16.5mm**
20.1mm 32.3mm 25.4mm 17.9mm 17.8mm 17.0mm 18.4-16.5mm**
Length 59mm 77mm/3.3 in. 81mm/13.2 in.: turn-and-slide 74mm 71mm 71mm 99mm/3.9 in.
79mm/3.1 in.: DS
Outer diameter 63mm 63mm/2.5 in. 63mm/2.5 in. 63mm 63mm 63mm 63mm/2.5 in.
Weight 240g 320g/11.29 oz. ***390g/13.76 oz. 230g 230g 230g 330g/11.64 oz.
Structure Waterproof (up to 2m for 10 min.) and fog free with nitrogen gas and
O-ring seals (body/eyepiece joint is water resistant)