If you're a photographer looking to enhance the capabilities of your Olympus M.Zuiko 7-14mm f/2.8 PRO camera lens, then the NiSi 100mm Filter Holder is the perfect accessory for you.With the ability to use up to two 100mm wide, 2mm thick filters, this filter holder is the perfect addition to your photography equipment. Whether you need an ND filter for long exposure photography or a GND filter to balance out uneven lighting, this filter holder has got you covered.The kit includes two main components, the filter holder frame and adapter ring. The adapter ring can be quickly mounted to the lens by using the four guides that sit in the lowest part of the lens hood, then rotating the back ring to tighten the adaptor around the lens. Lastly, tighten the silver lock knob to ensure the adaptor is firmly attached to the lens.Once the adapter ring is in place, the filter holder frame can be easily attached and locked into position using the pull-and-release locking lever. This locking mechanism provides a reliable connection that allows the holder to be rotated 360°, making it ideal for filters that require varied positioning.The NiSi 100mm Filter Holder for Olympus 7-14mm f/2.8 PRO supports up to two filters and is compatible with 100x100mm or 100x150mm filters of 2mm thickness. The holder features left to right pressed clips, making it easy and smooth to insert and remove filters.This filter holder is made from aviation-grade aluminum, making it durable and lightweight for landscape photographers who need to carry their equipment with them. It also has no vignetting at 7mm with the holder in the upright position, and only some vignetting when the holder is not in the upright position (45 degrees).Please note that this filter holder does not allow for the use of a circular polarizing filter, but a square 100mm polarizing filter can be used in one of the two filter slots and rotated in the frame to adjust polarization.