
Promaster 40.5mm UV HGX Prime
- Thread size: 40.5 mm
- Outer diameter: 42 mm
- Frame thickness: 6.0 mm
- Lens thickness: 1.3 mm
- Coatings: 22 layers
- Light transmission rate: 98.2% (average at 400 - 700 nm)
- Reflection: less than 0.3% (average at 420 - 680 nm)
- UV cutoff: 390 - 400 nm
- Made in Japan