The PROMASTER SystemPRO Universal Lens Hood is specially designedfor the wide focal lengths required by todays digital SLR cameras. Its petalshape design is instrumental in helping to reduce glare while minimizing thepotential for vignetting of your image.The unique two-piece design of this hood allows you to quickly and easilyreverse the hood for storage. The mounting collar accepts your standard lenscap for the ultimate in protection.