K&F Starlight Glare Colored Rainbow Flare Filter 49mm (Nano-B MRC)

The K&F Starlight Glare Colored Rainbow Flare Filter 49mm (Nano-B MRC) is an optical creative filter designed to produce multi-hued flare and streak effects from point light sources. It attaches to lenses with a 49mm front thread and uses Nano-B MRC coated optical glass to generate colored rainbow highlights, enabling photographers to introduce stylized, iridescent flares into portraits, night scenes, urban shots and concert images while maintaining overall image clarity.

Advantages

The Nano-B MRC coating reduces internal reflections and preserves contrast while deliberately creating colored flare effects. The filter’s optical glass construction provides consistent, repeatable results across different focal lengths and lighting situations. A standard 49mm thread makes it compatible with a wide range of lenses without additional adapters. The filter is lightweight and straightforward to mount, allowing quick changes during shoots.

Suitable for

• Portrait photography with stylized highlights
• Night and urban photography to enhance streetlights and signs
• Concert and event photography to add artistic light streaks
• Creative and experimental long exposures

Key specifications

• Filter type: colored rainbow flare / glare effect filter
• Thread size: 49 mm
• Optical element: coated glass with Nano-B multi-resistant coating
• Effect: produces multi-hued flares and streaks from point light sources
• Mount: screw-in metal or plastic ring compatible with 49 mm threads

How to use

Screw the filter onto the front of a lens with a 49mm thread until it is securely seated. Frame point light sources such as street lamps, LEDs or stage lights and adjust composition and focus to control the appearance of the colored flares. Stopping down or opening the aperture will change the shape and intensity of streaks; experiment with aperture, exposure time and angle to achieve the desired effect. Use manual focus or focus-lock when necessary, as strong flare can affect autofocus performance.

Usage recommendations

For predictable results, test the filter in similar lighting before a shoot and combine with controlled aperture changes. When shooting concerts or busy night scenes, monitor exposure to avoid blown highlights while keeping the colored flare visible.