NISI Nano coating Optical glass gradual ND filter series (photokina's video)

The famous Russian landscape photographor Zweiwei Team make the beauting time-lapse photography with NiSi GND filter，This video was also show in 2014 Photokina and provide by Nisi Company.

Nisi filter, the world's first nano coating square optical gradient filter. For more information, welcome to visit our websit: www.nisidigital.com