Nanlite PJ-BM-LENS-19 19° lens for Projector PJ-BM with Bowens-mount is designed to support the Nanlite PJ-BM projector (sold separately). This lens provides a narrower beam and greatly increases the brightness of the attached light. Although the additional output is a great benefit, the greater benefits are the endless creative possibilities it offers. Lighting a photo shoot is already incredibly creative in itself, but when you add the PJ-BM projector mount and this lens, the potential is unparalleled. You can create eye-catching textured backgrounds, razor-sharp spot effects and anything else you can imagine. The 19° lens offers substantially brighter output than either the light alone or a standard reflector light, often twice as bright as a fresnel lens light. The lens features a durable aluminum construction. Replacing the lens is easy by removing a single screw. The operation takes only seconds and no support tools are needed.