Rangers 3-Piece Filter Kit for 49mm Camera Lens Includes 49mm Filter Kit (UV, CPL,ND8) + Carrying Case + Snap-On Lens Cap w/ Cap Keeper Leash + Cleaning Cloth + Cleaning Pen RA023 Compatible with all 49mm lenses. Also compatible with Canon EF 50mm f/.1.8 STM Lens. UV Filters (Ultraviolet) reduce haze and help to improve contrast by minimizing the amount of UV light that enters the lens. These filters are especially useful in high altitude areas or snow. CPL Filters (Circular Polarizer) are necessary for removing unwanted reflections from glass or water. This filter allows for richer scenic shots and increased color saturation. ND8 Filters (Neutral Density) reduce the amount of light that reaches the film while still allowing a perfect balance of the colors. Please verify your camera's lens thread size before ordering. Your camera's lens thread size will be marked somewhere on the lens barrel or printed underneath your lens cap. This number is always preceded by an "" (diameter) symbol. For example: 49 = 49mm lens thread size.