This is a dedicated 36° interchangeable lens for the Nanlite PJ-BM Projection Attachment (which is sold separately). This lens provides a tight beam that adapts to shooting in smaller spaces, and it increases the light output. While the additional output is a huge bonus, the biggest benefits are the endless creative possibilities it provides. The Ultimate Light Shaping Tool Lighting a shoot is incredibly creative to begin with, but when you add the PJ-BM projector mount and this lens, the potential is unmatched. Create eye-catching textured backgrounds, razor-sharp spot effects, and anything else you can dream up. Ready For Small Spaces The 36° lens provides a tight beam, but it’s wide enough to be used in small spaces. It’s capable of covering large areas of a wall in a small room with either out-of-focus textures, or projections with sharply defined edges. Durable Aluminum Construction This lens and the compatible projection attachment (sold separately) feature a durable aluminum construction that stands up to the rigors of production work. Swapping Lenses is Easy Removing the current projection lens and swapping it for another is accomplished by removing a single screw. It only takes a few seconds and doesn’t require any tools.