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8
En
Fr
Pt
Es
Specifications
* Apparent field of view is calculated based on the ISO14132-1:2002 standard, and obtained by the following formula:
[tan ω' = Γ x tan ω ] Apparent field of view: 2ω', Magnification: Γ, Real field of view: 2ω
** When minimum magnification (8x) is selected
*** When minimum magnification (10x) is selected
Type Porro prism central focusing type
Model
ACULON A211
7x35 8x42 10x42 7x50 10x50 12x50 16x50 8-18x42 10-22x50
Magnification (x) 7 8 10 7 10 12 16 8-18 10-22
Effective diameter of
objective lens
(mm) 35 42 42 50 50 50 50 42 50
Angular field of view
(real)
(°) 9.3 8.0 6.0 6.4 6.5 5.2 4.2 4.6** 3.8***
Angular field of view
(apparent)*
(°) 59.3 58.4 55.3 42.7 59.2 57.2 60.8 35.6** 36.7***
Field of view at 1,000m
(m) 163 140 105 112 114 91 73 80** 66***
(ft.) 488 420 314 335 341 272 220 241** 199***
Exit pupil (mm) 5.0 5.3 4.2 7.1 5.0 4.2 3.1 5.3** 5.0***
Brightness 25.0 28.1 17.6 50.4 25.0 17.6 9.6 28.1** 25.0***
Eye relief (mm) 11.8 12.0 11.6 17.6 11.8 11.5 12.6 9.8** 8.6***
Close focusing distance,
approx.
(m) 5.0 5.0 5.0 8.0 7.0 8.0 9.0 13.0 15.0
(ft.) 16.4 16.4 16.4 26.2 23.0 26.2 29.5 42.7 49.2
Length
(mm) 118 145 145 180 179 179 179 163 197
(in.) 4.6 5.7 5.7 7.1 7.0 7.0 7.0 6.4 7.8
Width
(mm) 185 185 185 197 197 197 197 185 197
(in.) 7.3 7.3 7.3 7.8 7.8 7.8 7.8 7.3 7.8
Depth
(mm) 62 62 62 68 68 68 68 61 68
(in.) 2.4 2.4 2.4 2.7 2.7 2.7 2.7 2.4 2.7
Weight
(g) 685 755 760 905 900 910 925 825 960
(oz.) 24.2 26.6 26.8 31.9 31.7 32.1 32.6 29.1 33.9
Interpupillary distance
adjustment
(mm) 56-72 56-72 56-72 56-72 56-72 56-72 56-72 56-72 56-72
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