Aquatica 18411 Dome Port 4″ Bk-7 coated Mineral Glass

Description

Aquatica 18411 Dome Port 4″ Bk-7 coated Mineral Glass

This Aquatica Mini Dome 100 Ultra-Compact Fisheye Dome Port has a diminutive diameter of only 100mm / 4”, making it ideal for both travelling and shooting with fisheye lenses. An important characteristic of a Dome Port when immersed is that it becomes an optical element. The Dome’s surface curvature transforms it into a Plano Concave Lens Element which in turn becomes an integral part of the lens underwater optical formula. This phenomenon means that careful positioning of the Dome Port on the Fisheye Lens Optical Centre is critical if one is to attain the maximum optical performance of the lens. The Aquatica MINIDOME 100 Port is scrupulously ground from the finest BK-7 grade mineral glass stock to give you an exceptionally precise lens element to interface with the water.  The Dome Lens is internally coated with a superior Silicon Oxide coating (SiO2) and a Broad-Band Anti Reflective (BBAR) coating. The SiO2 coating is a more resistant type of coating than that used by most other manufacturers, it also has a 0.01% reflective index providing unparalleled light transmission among its competitors. Another important feature of SiO2 coating is that it’s a perfect match to the index of water which naturally lowers reflections. Both the SiO2 and BBAR coatings not only assist in preventing internal reflections but also protect the delicate internal surface from scratches As its name implies, this Aquatica Mini Dome 100 main characteristic is its small size, making it exceptionally well suited for a close focusing fisheye lens. The reduced frontal footprint not only means that the photographer can move in closer to get the shot but that it will also be much easier to position the lighting for the subject at such short distances. For a radically different point of view, the Aquatica MINIDOME 100 can be used to work with fisheye lenses equipped with teleconverters to shoot close focus wide angle, simply by acquiring the proper gears and port extensions that are made available to expand on your creativity. In these days of heavy travel restrictions, the Aquatica MINIDOME 100 with its diminutive size and feather lightweight is a dream to pack and in most cases can even be carried inside a regular camera bag. Special Order Product 4 - 6 weeks delivery.