Grass Valley LDK 7500 User Guide - Manual (Page 100)

4-6 HD video mode Viper
Video Functions
Filter switches
Rotate these switches to move the optical filter wheels:
The outer (bigger) filter switch has four positions:
1 : Clear
2 : ND 1/4 filter ( 2 stops)
3 : ND 1/16 filter ( 4 stops)
4 : ND 1/64 filter ( 6 stops)
The inner (smaller) filter switch has four positions:
1 : Clear
2 : 4-point star*
3 : 6-point star*
4 : Soft focus*
The status of the filterwheel is shown in the viewfinder for a few
seconds. If an ND (Neutral Density) filter is selected, the ND/RE
indicator in the viewfinder lights.
1
1
* The type of filters used in this filter wheel may vary from camera to camera.