Grey Filter, Grey x 4 D 0.60, 43,0 mm, HTMC Coated
- neutral grey
- to reduce light in case that it is too bright
- to reach large camera apertures while taking pictures outside = backround gets hazy
- exposure correction 4x = 2 stop values
- In case of exposure times longer than 1/30 seconds, water "flows" (if they are shorter, it freezes to ice)