Special filter with an ultra-flat rotating mount (4.5 mm). It serves as both a UV filter and lens protection against scratches, dust, and fingerprints. Suitable for wide-angle and wide-angle zoom lenses, particularly for fast autofocus lenses with integrated motor drive or front lens focus. No vignetting (dark corners of the image). Made from new, extremely high-quality optical glass (only 1 mm thick) and effective from 17 mm focal length (at 35 mm). Very lightweight. Multi-coated (HTMC): four coating layers are vapor-deposited on each side. Quality class (glass): professional. Enhances contrast and depth in images, making the sky appear blue, clouds white, and colors clearer. Depending on the filter's position, non-metallic reflections (from water, plastic, glass, etc.) are eliminated. The highest effect is achieved at a shooting angle of 30-40° to the reflecting surface.