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Dorr Alpina LX Porro Prism 20x50 Binoculars has a large centre focus wheel and retractable eyecups for eyeglass wearers and a solid rubber armour - this for additional comfort when viewing through the optics. The Alpina LX features MC (Multi Coated) optics and BAK-7 prisms, this means no reflection when viewing rich contrasts. Includes a 1/4" tripod socket and a carry case.
| Optical characteristics | |
|---|---|
| Type of build: | Porro |
| Magnification: | 20 x |
| Minimum focusing distance (m): | 10 |
| Objective lense diameter (mm): | 50 |
| Relative brightness: | 6.3 |
| Optical coatings: | Multiple |
| Glass material: | BAK-7 |
| Field of view | |
| Field of view at 1,000 m (m): | 61 |
| Twilight factor: | 31.6 |
| Field of view (degrees): | 3.8 |
| General | |
| Dimensions (L x W x H), (mm): | 170 x 185 x 65 |
| Series: | Danubia Alpina LX |
| Body material: | Metal / plastic |
| Weight (kg): | 0.789 |
| Body armouring: | Rubber |
| Warranty: | 2 years |
| Included accessories | |
| Carrying bag: | Yes |
| Area of application | |
| Astronomy: | Very good |
