ACULON A211
Overview
Feature Icons
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Porro Prism Type
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CF (Central Focusing)
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Aspherical Lens*1
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Multilayer Coating
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Wide Field of View*2
-
Rubber Coating
- *1Except zoom models
- *216x50 model only
Application Icons
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Birdwatching, nature watching
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Outdoors, camping, hiking
-
Spectator sports
Key Features
- New sleek design
- Aspherical eyepiece lens eliminates image distortion even at the lens periphery (except zoom models)
- Multilayer-coated lenses for brighter images
- Turn-and-slide rubber eyecups facilitate easy positioning of eyes at the correct eyepoint (except zoom models)
- Rubber armour for shock-resistance and a firm, comfortable grip
- Smooth zooming with finger-tip zoom control (zoom models only)
- Can be fixed to a tripod using optional tripod adaptor
(Tripod adaptor TRA-2 is a supplied accessory for the ACULON A211 16x50 and 10-22x50)
Specifications
| ACULON A211 7x35 | ACULON A211 8x42 | ACULON A211 10x42 | |
|---|---|---|---|
| Magnification (x) | 7 | 8 | 10 |
| Objective diameter (mm) | 35 | 42 | 42 |
| Angular field of view (Real/degree) | 9.3 | 8.0 | 6.0 |
| Angular field of view (Apparent/degree) | 59.3 | 58.4 | 55.3 |
| Field of view at 1,000m (m) | 163 | 140 | 105 |
| Exit pupil (mm) | 5.0 | 5.3 | 4.2 |
| Relative brightness | 25.0 | 28.1 | 17.6 |
| Eye relief (mm) | 11.8 | 12.0 | 11.6 |
| Close focusing distance (m) | 5.0 | 5.0 | 5.0 |
| Length (mm) | 118 | 145 | 145 |
| Width (mm) | 185 | 185 | 185 |
| Depth (mm) | 62 | 62 | 62 |
| Weight (g) | 685 | 755 | 760 |
| Interpupillary distance adjustment (mm) | 56-72 | 56-72 | 56-72 |
| Type | Porro | Porro | Porro |
| ACULON A211 7x50 | ACULON A211 10x50 | ACULON A211 12x50 | |
|---|---|---|---|
| Magnification (x) | 7 | 10 | 12 |
| Objective diameter (mm) | 50 | 50 | 50 |
| Angular field of view (Real/degree) | 6.4 | 6.5 | 5.2 |
| Angular field of view (Apparent/degree) | 42.7 | 59.2 | 57.2 |
| Field of view at 1,000m (m) | 112 | 114 | 91 |
| Exit pupil (mm) | 7.1 | 5.0 | 4.2 |
| Relative brightness | 50.4 | 25.0 | 17.6 |
| Eye relief (mm) | 17.6 | 11.8 | 11.5 |
| Close focusing distance (m) | 8.0 | 7.0 | 8.0 |
| Length (mm) | 180 | 179 | 179 |
| Width (mm) | 197 | 197 | 197 |
| Depth (mm) | 68 | 68 | 68 |
| Weight (g) | 905 | 900 | 910 |
| Interpupillary distance adjustment (mm) | 56-72 | 56-72 | 56-72 |
| Type | Porro | Porro | Porro |
| ACULON A211 16x50 | ACULON A211 8-18x42 (set at 8x) |
ACULON A211 10-22x50 (set at 10x) |
|
|---|---|---|---|
| Magnification (x) | 16 | 8-18 | 10-22 |
| Objective diameter (mm) | 50 | 42 | 50 |
| Angular field of view (Real/degree) | 4.2 | 4.6 | 3.8 |
| Angular field of view (Apparent/degree) | 60.8 | 35.6 | 36.7 |
| Field of view at 1,000m (m) | 73 | 80 | 66 |
| Exit pupil (mm) | 3.1 | 5.3 | 5.0 |
| Relative brightness | 9.6 | 28.1 | 25.0 |
| Eye relief (mm) | 12.6 | 9.8 | 8.6 |
| Close focusing distance (m) | 9.0 | 13.0 | 15.0 |
| Length (mm) | 179 | 163 | 197 |
| Width (mm) | 197 | 185 | 197 |
| Depth (mm) | 68 | 61 | 68 |
| Weight (g) | 925 | 825 | 960 |
| Interpupillary distance adjustment (mm) | 56-72 | 56-72 | 56-72 |
| Type | Porro | Porro | Porro |
- Note:Apparent field of view is calculated based on the ISO14132-1:2002 standard. For details, click here.