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15. Image Alignment
Image 15-1
Noise reduction adjustment
15.2.2.4 GAMMA Correction
About GAMMA Correction
Gamma is an image quality enhancement function that offers a richer image by brightening the darker portions of the image without
altering the brightness of the brighter portions. Table below explains the different value ranges.
Gamma Value Influence on the displayed image
γ =2.2
This is the standard value. With reference to the eye perception, the displayed image is the most natural
image. (Best match between camera recording, projector display and human eye).
1.0 < γ <2.2 A lower value enhanced the details in the dark image content, without changing the black level, resulting
in a lower contrast perception.
2.2 > γ >3.1
A higher value occurs a fade away of the details in the dark image content, without changing the black
level, resulting in a higher contrast perception.
How to set up the correct GAMMA value
1. From the Picture tuning menu, select item GAMMA. (menu 15-9)
The GAMMA bar scale appears on-screen and in the graphical display. The GAMMA level is adjustable in 7 steps. (image 15-2)
2. Press cursor key ← ,→ (RCU) or rotate selection wheel to the left or to the right until desired value is displayed.
3. Press EXIT or selection wheel to return.
PICTURE TUNING
CTI [ON]*
COLOR TEMPERATURE*
GAMMA
DECODING [EBU]
DYNAMIC COLOR DEPTH*
NOISE REDUCTION
INPUT BALANCE
Select with ↑ or ↓
then <ENTER>
<EXIT> to return
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78 R5976519 ACSAR 12122002