This is a very light sensitive spotting scope with a large 80mm front lens and Bak-4 prisms, which are considered the best type of porro prisms. Together with an ED lens, they provide an incredibly sharp and lifelike image.
The dual focus mechanism makes it easy to focus quickly and accurately to ensure you never miss any interesting objects. A large field of view makes it easy to find and follow birds, e.g. The field of view is 42-19m at 1000 meters and the closest focus distance is only 5.5 meters. The binoculars are waterproof and filled with nitrogen gas, which means that condensation never forms inside the lenses. Focus Viewmaster ED is delivered with a practical and protective case, a so-called "stay-on case", so that your binoculars are always protected, both during transport and also when in use. The weight of the tripod package is 2.6 kg and the binoculars 1.4 kg, giving a total weight of 4 kg.
Product information Focus Viewmaster
Size: 400 x 96 x 165 mm
Lens diameter: 80 mm
Magnification: 20-60x
Weight: 1400 g
Exit pupil: 4-1.33
Field of view: 37-19 m/1000 m corresponding to 2.1-1.1°
Closest focusing distance: 5.5 m
Waterproof: Yes
Warranty: 5 years
Product information Sirui R-2004/VH-10
Max leg diameter: 28 mm
Minimum (folded) length: 61 cm
Maximum height without center pillar: 143 cm (incl. head)
Maximum height including center pillar: 172 cm (incl. head)
Number of sections: 4
Weight: 2.6 kg
Max load: 15 kg on the legs, 6 kg on the head
Counterweight spring, load: 2 kg
Warranty: 6 years