Glass material: Optical glass with high quality and high degree of finish, imported optical Nitto polarizing film.
Surface material: Ultra-hard aviation aluminium, sealess procession structure.
Appearance design: Double-faced super multilayer cating film, super long external thread design.
Biggest diameter: 40mm
1. When need low shutter speed: it needs moving or continous pictures by exposure for long time when shooting in day time.
2. When stand out the shooted subject: it stand out the main subject by blurring the background in the large aperture.
2. When need control sensitivity: in the outdoor bright environment, the ND2-ND400 glass can protect the needed exposure.
4. When need to prevent exposure: using the glass can avoid the over exposure situation as shooting in the smallest aperture.