K&F Starlight Glare Color Rainbow Flare Filter 67mm (Nano-B MRC, model SB9140)

The K&F Starlight Glare Color Rainbow Flare Filter 67mm (Nano-B MRC, model SB9140) is a screw-in optical filter designed to produce rainbow-colored flares and streaks from bright point light sources. Made for lenses with a 67mm thread, this glass filter introduces creative chromatic flare effects while maintaining image clarity. The Nano-B MRC coating reduces surface reflections and makes the glass easier to clean, helping preserve contrast and minimize unwanted ghosting when used in controlled lighting situations.

Advantages

This filter creates pronounced rainbow flares that enhance portraits, night scenes, and artistic compositions without the need for digital post-processing. Its screw-in mount ensures secure attachment to compatible 67mm lenses and keeps the optical alignment consistent. The multi-resistant coating (MRC) protects the glass surface from fingerprints and smudges and reduces flare caused by internal reflections. The optical glass preserves sharpness and resolves fine detail while delivering distinctive color diffraction effects.

Suitable for

• Portraits with creative lighting accents
• Night photography of streetlights, car lights and illuminated signs
• Music and concert photography to emphasize stage lights
• Artistic and experimental photography and videography
• Product and fashion shoots requiring stylized light streaks

Key specifications

• Filter type: color rainbow flare / star/glare effect
• Mount: screw-in, fits 67mm lens threads
• Optical element: coated glass designed for flare diffraction
• Coating: Nano-B multi-resistant coating (MRC) to reduce reflections and ease cleaning
• Color effect: rainbow spectrum flares and streaks from point light sources
• Intended use: creative effect filter for stills and video

How to use

Attach the filter to any lens with a 67mm front thread by screwing it on until secure. Compose your shot so that bright point light sources—such as streetlights, LEDs, or specular highlights—are within or near the frame; the filter diffracts those points into rainbow-colored flares and streaks. Experiment with angle, distance and aperture: wider apertures emphasize softer streaks while smaller apertures can increase starburst detail. When shooting video, monitor movement of light sources to control flare placement within the scene.

Usage recommendations

Use the filter in controlled lighting to predict flare behavior; avoid excessive backlighting that may wash out subject detail. Clean the coated glass with a microfiber cloth and suitable lens cleaner to maintain coating performance. Combine the filter with non-reflective lens hoods or flags to limit stray light, and bracket exposures when working in high-contrast situations.