| 520 |
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0.8 |
| 540 |
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| |
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| Green | 560 |
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0.6 |
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| |
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| |
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| 580 |
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Y 0.4 |
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| 590 |
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| 2850 | 1500 |
| |
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| ||
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| 4800 | 1000 | 620 |
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| 6500 |
| |
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| 10000 | Red |
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| Infinity | 650 | ||
0.2 |
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| |||
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| |
| 480 | Blue |
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| |
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| 470 |
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0.0 | 450 |
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| |
| 0.2 | 0.4 | 0.6 | 0.8 | |
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| X |
| Fig. 17 |
|
| x= 0,282 |
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| y= 0.320 |
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| T= 8700K | y |
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| uv= 0,015 |
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x
Fig. 18
Gamma Correction
Determines the system’s response to the grey scale, empha- sising or attenuating the different grades of brightness (blacks, dark, medium, light grey, whites) in the projected image.
The projector has a range of gamma functions which enable you to display any image to the best effect for the type of video source, the ambient lighting and your subjective pre- ferences.
There are 4 sets of gamma curves: Standard (ST), Enhanced SIM2 (EN) and Graphics (GR), User. The Standard curve has been defined for general use, and is set for videocameras, digital
HT5000
cameras, and for viewing films or photos on your PC.
The Enhanced set is suitable for watching movies. The Graphics set is suited to displaying graphics (PC, CAD, PC presentations, etc.). User enables you to define your own curve. You can thus
Table 5 - Gamma correction settings
functions | Standard | ST1 | For general use |
|
| ||
Gamma |
|
|
|
Gamma functions | Enhanced SIM2 | EN1 | Suited to displaying images from videoca- |
| meras, digital cameras or TV studios in high | ||
| ambient light. | ||
EN2 | Suited to displaying images from videoca- | ||
| meras, digital cameras or TV studios in low | ||
|
|
| ambient light. |
|
| EN3 | Suited to displaying cinematographic material |
|
|
| in high ambient light. |
|
| EN4 | Suited to displaying cinematographic material |
|
|
| in moderate ambient light. |
|
| EN5 | Suited to displaying cinematographic material |
|
|
| in controlled ambient light. |
functions | Graphics | GR1 | Suited to displaying graphic images (e.g. Win- |
| dows desktop) in moderate ambient light. | ||
|
| ||
Gamma |
| GR2 | Suited to displaying graphic images in mode- |
|
| rate controlled light. | |
|
|
| |
User |
| USER | With USER curve the the user may select the |
|
| exponent (gamma value) used for gamma | |
|
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| |
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| compensation. |
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|
19
