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54 LDK 8000 HDTV camera system User’s Guide (v3.0)
Chapter 5 - Operating instructions
Variable gain
The gain switch can also be used to vary the gain continuously between its minimum and
maximum value.
1. Hold the switch continuously in the up or down position until you see the value in the
viewfinder change in steps of 0.1dB.
2. Release the switch when you reach the value you want.
3. Using the switch momentarily again sets the gain to the nearest standard value.
5.7.4 Optical filter selection
A neutral density filter and a special effect filter can be placed in the path of the optical signal to
modify the incoming light. The filters are selected via the Filter switches at the top-front of the
camera. These filters can be used, for example, to control depth of field or exposure levels.
The camera does not need colour optical filters to be able to white balance correctly. The range
of the auto-white balance is so wide (from 2500K to 20000K) that there is never any need to
use colour filters to obtain the correct white. Rotate the switches to move the optical filter
wheels.
The outer (bigger) filter switch has four positions:
The inner (smaller) filter switch also has four positions:
The status of the filter wheels is displayed in the viewfinder for a few seconds. The ND/RE
indicator in the viewfinder lights when an ND (Neutral Density) filter is selected.
Symbol Gain
- is always -6 or -3dB
0 is always 0dB
+ can be set to 3, 6 or 9dB
++ can be set to 6, 9 or 12dB
+++ is always 12 dB
Position Filter
1Clear
2 ND 1/4 filter (2 stops)
3 ND 1/16 filter (4 stops)
4 ND 1/64 filter (6 stops)
Position Filter
1Clear
2 4-point star
3 6-point star
4Soft focus