High-Resolution BAK4 prisms ensure a brighter image throughout the range of magnifications by maximising light transmission.

The objective lens is the large-diameter lens at the other end from the eyepiece, from which light is transmitted. The model features enlarged porro prisms and anti-reflective multi-coatings to maximise field of view, cross-field resolution and low light performance. There can be no doubt that there are many occasions at sea when the use of a good pair of marine binoculars greatly enhances safety. This allows for differences between a user’s individual eye focus by rotating the eyepiece, which is designated by + and –.Optical performance is superb due to premium quality BaK-4 prisms, multi-coated optics, long-eye relief, and oversized eye-lenses. A 7x magnification binocular is considered the ideal marine or low light binocular, this size would be perfect as a gift when you’re unsure of what the binoculars would be used for.

The prisms have ‘floating’ mountings: they are fixed with a durable, flexible silicone material to protect the valuable optical components inside. Other important factors include ‘feel’, which combines the binoculars’ weight and size with balance, tactility and grip. They are identical to the Konus Tornado and Talamex Lankhorst Taselaar Deluxe binoculars, except for a different hand grip and colour, but are quite a bit cheaper. A large diameter is important as it helps to pick up an image from a moving deck and for night vision when pupils are fully dilated.Great value I bought the Binoculars for observing at night, unfortunately we’ve had clouded evenings since we got them, however daytime use has been great, clear vision and very lightweight. Similarly, the maximum size of the objective lens that can comfortably be accommodated with handheld binoculars is 50mm.

GA / IC is protected from knocks and bumps with specially mounted prism assemblies, strong single die-cast aluminium bodies and durable thick rubber armouring. Used by the ORCA Survey teams to locate, identify and track whales and dolphins the binocular uses extra-large prisms and anti-reflective multi-coatings to maximise field of view, resolution and light transmission needed for accurate observation at distance. The compass display has two modes, either a horizontal scale or a centre mark: these and other functions are accessed through further up/down navigation buttons.We are using the very latest Zygo MX software to provide a more detailed report compared to other standard reports.