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Helios Quantum-4 20x80
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Specifications
| Manufacturer | Helios |
|---|---|
| Model | Quantum-4 20x80 |
| Lens diameter [mm] | 80 |
| Magnification [x] | 20 |
| Angular field of view [deg] | 3.2 |
| Linear field of view [m/m] | 56/1000 |
| Exit pupil [mm] | 4 |
| Eye relief [mm] | 0 |
| Min. focusing dist. [m] | 25 |
| Twilight factor | 40 |
| Brightness | 16 |
| Prisms | BaK-4/Porro |
| Dimensions [mm] | |
| Weight [g] | 3170 |
| Waterproof | Yes |
| Nitogen filling | Yes |
| Argon filling | No |
| Image stabilization | No |
| Tripod exit | Yes |
| Focusing | individual |
| Warranty [years] | |
| Accesories | |
| Price | 0 |
| Additional information | triplet front lens |
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