The 85mm holder by Format Hi-Tech is a professional grade filter holder for crop sensors, super 35mm and even full frame cameras. Made from aircraft grade aluminium, with two slots as standard as well as an optional third slot included in the spare's kit. The kit includes four-step ring 72-77mm, 68-77mm and a 58-77mm step-up ring. The filter kit also includes a 77mm geared circular polarizing filter. The kit is stored in its own luxury pouch with space for all the holder parts. To install the kit's screw in the correct size step ring for your lens, take care to make sure this is seated correctly on the lens. Once the step ring is installed, you can add the circular polarizing filter. The holder can be used without this filter, but it is advised it is added at this stage. Once the filter is fitted, you can now add the holder frame. Be careful to align the lugs on the back of the holder. Once seated correctly, you can simply tighten the thumb screw on the side as shown. Now the holder is mounted, you can start to add your filters. Start by gently pushing the filter in from the top. It should slide in with a small amount of resistance. If it is too tight, this can be loosened with the included Allen key. With the holder attached, you can now slightly loosen the holder. It will be able to move and lock into different positions to aid in the use of graduated filters. When you have found the desired position, simply lock it in place by tightening the thumb screw again. To use the circular polarizing effect, simply turn the wheel on the side. This allows you to set polarization after other effects without changing the holder position. To remove the holder, simply loosen the thumb screw while holding the frame and remove it. You can now remove the step ring by simply unscrewing it. Format Hi-Tec is proud to have the most professional and comprehensive 85-millimeter filter range on offer, including top of the range tough and glass IR&D filters and even cinema grade diffusion for videography and cinema.