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40
En
Eyepiece lens specifications
Model
MEP-38W
MEP-20-60
MEP-30-60W
MONARCH Fieldscope diameter (mm) 82 60 82 60 82 60
Magnification (×) 38 30 20 – 60 16 – 48 30 – 60 24 – 48
Angular field of view (Real/degree) (°) 2.0 2.5 2.1 – 1.0
*3
2.6 – 1.2
*3
2.0 – 1.2
*3
2.5 – 1.5
*3
Angular field of view (Apparent/degree) (°)
*1
66.4 40.4 – 54.3
*3
55.3 – 65.6
*3
Field of view at 1,000 m/yd. (m)
(ft)
35
105
44
132
37 – 17
*3
111 – 51
*3
45 – 21
*3
135 – 63
*3
35 – 21
*3
105 – 63
*3
44 – 26
*3
132 – 78
*3
Exit pupil (mm) 2.2 2.0 4.1 – 1.4
*3
3.8 – 1.3
*3
2.7 – 1.4
*3
2.5 – 1.3
*3
Relative brightness 4.8 4.0 16.8 – 2.0
*3
14.4 – 1.7
*3
7.3 – 2.0
*3
6.3 – 1.6
*3
Eye relief (mm) 18.5 16.1 – 15.3
*3
15.2 – 14.2
*3
Length (mm/in.)
*2
73/2.9 89/3.5
91/3.6 (with DS)
*4
92/3.6 (with TS)
*5
Outer diameter (mm/in.)
*2
61/2.4 62/2.4 62/2.4
Weight (g/oz)
*2
270/9.5 350/12.3
370/13.1 (with DS)
*4
400/14.1 (with TS)
*5
Waterproof performance
Eyepiece: Not waterproof
With Fieldscope attached: Waterproof (water equivalent to 5 mm (0.2 in.) per minute for a dura-
tion of 30 minutes)
*6
*1 Calculated based on the ISO14132-1:2002 standard
*2 Without caps
*3 Designed reference value at the highest magnification
*4 When the DS (digiscoping) ring attachment is attached
*5 When the TS (turn slide) ring attachment is attached
*6 This product will suffer no damage to the optical system in falling water equivalent to 5 mm (0.2 in.) rainfall per minute for a duration of 30
minutes. NOT designed for underwater usage.
Note: Because values shown on these charts were designed values rounded up/down, calculation of figures may not match exactly.
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