【Cinematic Effect Lens Filters】 NEEWER 49mm black diffusion camera lens filters create cinematic effects with the 1/4 & 1/8 density. The filters helps reduce highlights and lower the glare, making the skin look smoother and gives the tone a hazier and softer look. With the dreamy hazy film effects, they are ideal for portrait photography, video recording, and vlog | 【HD Optical Glass】 Made of cutting edge HD optical glass with premium light transmission, the 49mm lens filters lower contrast, soften skin wrinkles and pores, and provide a practical and increased halo that adds a pleasingly warm depth to the image | 【30 Layers Nano Coatings】 The 30 layers of nano coatings on both sides of the filters make them waterproof, scratch resistant, and oil proof, to effectively reduce the reflection coming from all directions and the filter itself | 【CNC Non Slip&Ultra Slim Frame】 Featuring 0.13"/3.3mm ultra slim frame with CNC trapezoidal pattern, the 1/4 & 1/8 filters avoid vignetting and dark corners on wide angle and telephoto lenses. CNC non slip design frame is easy to install and remove . Filter cases and clean cloth are included for safe keeping and cleaning | 【About Their Compatibility】These black diffusion filters are compatible with all 49mm lenses. Please verify your camera's lens thread size before ordering. Your camera's lens thread size is marked with the "ø" (diameter) symbol