11. TECHNICAL APPENDIX
DXC-C33/C33P Product Information Manual
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27
■ DCC+ process
• The DCC+ (Dynamic Contrast Control Plus) process manages video signal data at three levels -
brightness, hue and saturation. The result is an image with suitable Knee correction and without
hue distortion.
Clip level
Knee point
Luminance
level
BGR W BGR BGR W BGR W
Gray Color
Skin Color
Skin Color
without Knee
Skin Color with
conventional
Knee
BGR W
Skin Color
with DCC+
W
■ Knee and Black Stretch
• By adjusting the Knee, a Knee point and Knee slope are set so that the highlighted areas of the
picture can be clearly reproduced.
• Contrast in the dark area of the image can be variably adjusted using the Black Stretch function
for a clear view of specific details.
100%
90%
70%
High
Low
Normal
Luminance level
Amount of light input to camera
20%
Black Stretch
Knee
Compress
Stretch
Electronic Shutter function
• The variable electronic shutter built into the CCD imager enables the DXC-C33/C33P to capture clear
images of moving objects. The shutter speed can be manually selected from a wide range of speeds
(up to 1/100000).
• The Flickerless mode allows you to obtain flickerless
images even in fluorescent lighting conditions.
• The Clearscan
TM
mode reduces the horizontal bands
that appear in computer displays when shooting the
display with a conventional video camera.
<Shutter-speed calculation in Clearscan mode>
Example: When the value is set to 250 H
(NTSC) 250 63.56 us (1 H) + 34.78 us (constant)
= 15924.78 us
= 1/62.8 s
(PAL) 250 64 us (1 H) + 35.6 us (constant)
= 16035.6 us
= 1/62.4 s
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