Optical Filter K&F Concept Halo Spiral Blur Effect Nano-B 82 mm (model SB9066)

The K&F Concept Halo Spiral Blur Effect Nano-B 82 mm (model SB9066) is a screw-on optical filter designed for 82 mm threaded lenses. It creates a spiral or halo-style blur around bright points of light, producing streaks and soft starburst effects while keeping the subject’s general shape readable. The filter is intended for creative and atmospheric photography, enabling subtle or pronounced light diffusion for portraits, night scenes, and long-exposure compositions.

Advantages

This filter delivers controlled spiral blur and halo effects without digital post-processing, preserving contrast in the central subject while transforming highlights into artistic streaks. The Nano-B coating helps resist reflections and makes the surface easier to clean, and the screw-on design ensures secure attachment to compatible 82 mm lenses. Its optical construction is optimized to produce consistent, repeatable effects suitable for studio and outdoor use.

Suitable for

• Portraits where selective highlight diffusion softens background lights
• Night photography and urban scenes with point light sources
• Creative long-exposure shots to emphasize motion and light trails
• Studio work when stylized flare or halo effects are required

Key specifications

• Mount type: screw-on circular filter for 82 mm lens threads
• Effect type: spiral / halo blur that transforms highlights into streaks
• Coating: Nano-B anti-reflective and easy-clean coating (optical surface treatment)
• Compatible optics: designed for use with lenses accepting 82 mm filters
• Use cases: portrait, night, long exposure, and creative photography

How to use

Screw the filter onto a lens with an 82 mm thread until it seats securely; avoid over-tightening. Compose and focus normally on your subject — the filter modifies highlights and background lights rather than subject detail. For subtle results, use smaller apertures and control exposure as you would without a creative filter. For pronounced spiral or halo streaks, use wider apertures or include stronger point light sources in the frame. When shooting long exposures, combine the filter with a tripod and remote release to maintain sharpness of the main subject while capturing light trails.

Usage recommendations

Keep the filter clean and store it in a protective case when not in use. Test the effect in different lighting conditions and apertures to find the desired intensity of the spiral blur. Use lens hoods or shading techniques to reduce unwanted lens flare from off-frame light sources.