1. It absorbs ultraviolet rays and can always be installed on the lens to ensure better clarity and color balance while protecting your lens from scratches and dust. 2. Equipped with tier filter functionality, it effectively eliminates harmful reflected light. 3. The coating helps reduce filter surface reflection and ghosting while making the filter scratchresistant, waterrepellent, and resistant to oil and dust. 4. Designed with double polishing technology, it enables clear and natural color reproduction even with telephoto lenses. 5. These filters enhance skies, water, and foliage, dramatically highlighting natural elements for betterlooking images. 6. A gradient filter is an essential level tool for color photography. It reduces localized brightness, controls contrast, prevents overexposure in skies or foregrounds, and transforms dull skies into vibrant blues while creating unique atmospheric effects and subjective sky tones. 7. Adjust the gradient filter based on composition needs and horizon height. Move it up or down to position the gradient line (unlike screwin filters). With a wide aperture (or long focal length), the gradient line softens. Use depthoffield preview to stop down to the working aperture and finetune the gradient position. 8. The filter features a color gradient, with its coefficient indicating light or dark tint strength. Its primary role is balancing light differences, so exposure compensation is usually unnecessary. The provided compensation value reflects contrast suppression or filter color depth. 9. Before use, meter the 'sky' and 'ground' separately. After determining the light ratio, choose light or dark filters and decide whether to stack multiple filters.