UV Filter K&F KF01.1428 77mm HD Multi-Coated — 77 mm thread UV protection

K&F UV Filter KF01.1428 77mm HD Multi-Coated is a 77 mm thread ultraviolet protection filter designed to reduce UV light and minimize atmospheric haze while protecting the front element of a camera lens. The slim metal frame holds a multi-coated optical glass that improves light transmission and reduces surface reflections, allowing photographers to maintain image clarity and safeguard lenses from dust, scratches and fingerprints without affecting exposure or color balance significantly.

Advantages

The multi-coated optical surface increases light transmission and lowers ghosting and flare from strong light sources. A slim profile metal frame reduces the likelihood of vignetting on wide-angle lenses while providing secure, easy mounting and removal. The filter creates a physical barrier that helps prevent mechanical damage and contamination to the lens front element and is suitable for everyday use in outdoor shooting conditions.

Suitable for

• Outdoor landscape and travel photography where UV reduction and haze control are beneficial
• Everyday lens protection during transport and use
• Shooting in bright daylight to reduce UV-related bluish cast at high altitudes or over water
• Use with 77 mm threaded lenses and compatible step-up/step-down adapter rings

Key specifications

• Filter type: UV (ultraviolet) protection filter
• Diameter / thread size: 77 mm
• Glass: multi-coated optical glass for reduced reflections
• Frame: slim metal frame to minimize vignetting on wide-angle lenses
• Primary functions: UV reduction, haze minimization, front element protection

How to use

Screw the filter onto the front thread of a 77 mm lens until it seats gently; avoid overtightening. Use the filter on outdoor shoots to reduce ultraviolet haze and as a protective element when the lens is exposed to dust, sand or incidental contact. Clean the glass with a blower, microfiber cloth and appropriate lens cleaning solution when necessary to maintain optical performance. Remove the filter for specialized filters or glass when different optical effects or polarization are required.

Usage recommendations

For best results, keep the filter clean and store it in a protective case when not in use. The slim design is preferable for wide-angle lenses, but verify compatibility with lens hoods and stacked filters to avoid vignetting or mechanical interference.