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Three circular glass filters in a slim metal frame, 40.5mm diameter

Urth

Urth 40.5mm Stellar Filter Kit camera filter

SKU CH-F8BN-R2BT5

A 40.5mm kit with 4-point, 6-point and 8-point star filters made from Japanese AGC optical glass with 8-layer nano-coating in ultra-slim magnalium rims

  • Size40.5mm
  • Adds 4-point starbursts to bright highlights using the 4-point star filter
  • Creates 6-point star effects on specular light sources with the 6-point filter
  • Produces 8-point star patterns from point lights via the 8-point filter
  • Japanese AGC optical glass with 8-layer nano-coating for sharpness and easy cleaning
  • Ultra-slim magnalium double-threaded frames prevent vignetting and allow stacking

40.5mm Stellar Filter Kit

The Urth Stellar Filter Kit provides three star-effect filters in a single 40.5mm set. It is designed for photographers who want to add creative starbursts to bright highlights without changing exposure settings. The kit covers 4-point, 6-point and 8-point patterns for varied artistic results.

Japanese AGC glass with ultra-slim magnalium rim

Each filter uses Japanese AGC optical glass for high sharpness and clarity. An 8-layer nano-coating repels water and oil while making cleaning easier. The ultra-slim magnalium rim reduces vignetting and the double-threaded design allows stacking or a lens cap to be attached.

Three star filters for different burst styles

The box contains a 4-point, a 6-point and an 8-point star filter so you can match the effect to the scene. They work best with strong, partially obscured light sources such as sunlight through leaves. Aperture shape influences the final starburst, with polygonal apertures producing stronger rays.

Highlights

  • Adds 4-point starbursts to bright highlights using the 4-point star filter
  • Creates 6-point star effects on specular light sources with the 6-point filter
  • Produces 8-point star patterns from point lights via the 8-point filter
  • Japanese AGC optical glass with 8-layer nano-coating for sharpness and easy cleaning
  • Ultra-slim magnalium double-threaded frames prevent vignetting and allow stacking

Specifications

Size40.5mm

Questions about this item

What does the 40.5mm thread size mean for lens compatibility?

The 40.5mm thread matches lenses with that exact filter diameter; check the front of your lens barrel for the Ø40.5 marking before purchasing.

How thin is the magnalium rim and will it vignette on wide angles?

The ultra-slim magnalium frame is designed to minimise vignetting, even when stacking the double-threaded filters on wider focal lengths.

How do I attach the star filters and which side faces the lens?

Screw the filter onto the lens threads with the coated glass facing the sensor; the double threads let you stack another filter or cap on the front.

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