This Benro FH100M2BHF Master 100mm Wide-Angle Filter Holder allows for the convenient use of up to three, separately available 100mm wide, 2mm thick filters and a separately available Benro MACPL95 95mm Circular Polarizer Filter that is designed to avoid vignetting when used with a wide-angle lens. With a separately available Benro FH100M2LR77 77mm or FH100M2LR82 82mm adapter ring, this filter holder can be mounted onto a lens or step-up ring with 77mm or 82mm front filter threads. For use with the Benro FH100M2BHF Master 100mm Wide-Angle Filter Holder, a compatible filter must first be installed within a separately available Benro 100 x 100mm Filter Protecting Frame or Benro 100 x 150mm Filter Protecting Frame. Those two Benro filter protecting frames are each designed to encase the edges of one 100 x 100mm, 2mm thick filter and one 100 x 150mm, 2mm thick filter, respectively. By encasing the sides of an installed filter, these filter protecting frames help to eliminate stray light, which could have unwanted effects on exposure, from coming in-between an installed filter and the filter holder and lens behind it. Additionally, a Benro filter protecting frame reinforces an installed filter s rigidity while preventing its sides from having to come into direct contact with the filter holder s slots. This protects those side surfaces and promotes sharp results by helping to ensure that a filter remains flat.
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