Rangers Focus Series 77mm Full ND Filters Includes Full ND2, ND4, ND8, ND16 Filters + Carrying Case + Lens Cleaning Cloth + Lens Cleaning Pen RA022 -The Rangers Focus Series polarized filters are great for long exposure shots and slower shutter speeds. Ultra-Slim Design, High-Impact plastic lens material and Aluminum alloy frame ensure the high performance in use. Compatible with all 77mm diameter lenses. 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: 77= 77mm lens thread size.