【Compatibility】The L39 Ultra Slim Multi-Coated UV filter is Compatible with Ricoh GR IIIx, GR IIIx HDF, GR III, GR III HDF GR IV and GR II digital compact cameras. 【UV Protection】The filter blocks UV light and reduces the bluish cast of daylight that can affect color accuracy, especially at higher altitudes. Leave the filter on your lens as a general protective filter to protect against dust, scratches and fingerprints. 【Soft Highlight Flares, Lowered Contrast】This black diffusion 1/4 filter can soften facial skin's wrinkles, freckles, and pores, making it more delicate, plump, and gorgeous. The mist dream effect can be better realized, by showing the film effects dreamily. 【28 Multi-Coated Optical Glass】Multiple layer coatings prevent internal ghosting and reflections, while make the filter anti-scratch, anti-static, oil and water-resistant. 【High Transmission & Slim Design】Both Filters are constructed imported AGC optical glass. It features a 1.8mm ultra slim aluminum-alloy frame to prevent vignetting. * K&F CONCEPT is the world's No.1 brand in terms of lens filter online sales volume among camera-accessory-focused brands. Source: Euromonitor, 2024 data. Elevate your Ricoh GR III series camera's lens protection and creative potential with this K&F Concept Black Diffusion 1/4 Filter Kit. The 49mm filter features a multi-coated optical glass that blocks UV light, reduces color cast, and offers general protection against dust, scratches, and fingerprints. Its diffusion effect softens facial features, creating a dreamy, film-like aesthetic. The kit includes a 42-49mm adapter ring, ensuring a secure fit on your camera lens. With a slim 1.8mm aluminum-alloy frame, it minimizes vignetting and maintains high transmission for optimal image quality. The filter is waterproof, oil and water-resistant, and features an anti-static coating for durability.