Vixen Geoma III ED Series Fieldscope, Geoma III ED80 ZOOM, 18109-4

Format: 45° Inclined Effective Objective Lens Diameter: 80mm Lens Type: ED Lens Coating: PFM5 Coating Minimum Focus Distance: Approx. 5.5m Eyepiece/Magnification: Zoom Lens, 20-60x Eye Relief: 20-18mm Actual Field of View: 2.1-1.1° Apparent Field of View*: 40.3-59.9° Apparent Field of View (Old JIS Standard): 42-66° 1000m Field of View: 37-19m Exit Pupil: 4-1.3mm Brightness: 16-1.7 Water Resistance: Nitrogen Gas Filled (IPX6 Equivalent: Main Unit) Key Accessories: Smartphone Camera Adapter, Stay-On Case

*: Compliant with JIS B7157:2003 [High-Performance Fieldscope with ED Lens. Smartphone Adapter Included] The ED (Extra-Low Dispersion) lens provides a field of view with excellent contrast and minimal color fringing. The dual focus ring makes fine focusing easy. A smartphone camera adapter is included, allowing you to easily enjoy shooting with your smartphone.

[High-contrast, clear view with PFM5 Coating] The entire optical surface of the lens is coated with a five-layer anti-reflective multi-layer coating called PFM5 Coating (Perfect Fully Multi-Five Coating). Compared to PFM Coating, which applies three layers of multi-coating to the entire optical surface, this coating reduces light loss, resulting in a bright field of view and excellent contrast.

[20-60x Zoom Lens (Parfocal)] This zoom lens allows for stepless magnification change from 20x to 60x. Furthermore, its parfocal design means that the focus position hardly changes even when changing magnification. Once you've focused, there's almost no need to refocus even when changing magnification, allowing you to concentrate on your observations.

[Eyepieces designed for easy viewing] The high eyepoint design (eye relief 20-18mm) allows you to see the entire field of view without having to press the eyepieces hard against your eyes. Furthermore, it features a large 24mm diameter eyepiece and a twist-up eyepiece that adjusts height by rotating it with your fingers, making it designed to reduce eye fatigue even during extended observations. A wide field of view is possible with both the naked eye and glasses. [Dual Focus Focusing Ring] The dual focus ring features two speeds: coarse and fine (reduction ratio 1:9). After quickly focusing with the coarse adjustment, you can precisely refine the focus position with the fine adjustment. This makes precise focusing extremely smooth when observing details such as bird feathers or taking photographs.