ViewSonic Projector LS820 User Manual

24
Changing HDMI input settings
In the unlikely event that you connect the projector to a device (such \
as DVD or Blu-
ray player) via the projector’s HDMI input jack, and the projected picture displays the 
wrong colors, please change the color space settings to one that complie\
s with the 
color space settings of the output device.
To perform this operation:
1.  Open the OSD menu and enter  Display > HDMI settings Menu.
2.  Press [Enter].
3.  Select HDMI format, then press / to select a suitable...

25
Adjusting the projected image
Adjusting the projection angle
The projector is furnished with an adjustment 
support peg. The adjustment support peg may 
be used to adjust projection height and projection 
angle along the vertical axis. The user may 
turn the adjustment support peg to make fine 
adjustments to projection angle and position of 
the projected image until it reaches the desired 
location.
If the projector is placed on an uneven surface or where the screen and \
projector 
are not...

26
Correcting keystone
Keystone distortion is a problem where the projected image becomes trape\
zoidal in shape 
(keystone distortion) as a result of poor projection angle.
To correct this situation, you should adjust projector height and use the\
 following steps to 
correct the issue manually.
• Using the remote control
1.  Press 
/// to display the Keystone Correction page.
2.  Press 
 to initiate Keystone Correction at the 
top of the image. Press 
 to initiate Keystone 
Correction at the bottom of...

27
Adjusting the 4 corners
You may manually adjust the irregular shapes and 
sizes of the rectangular image manually.
1. To display the  Corner Adjustment page, please 
follow any one of these steps:
i.  Press [Enter].
ii.  Open the OSD Menu and enter  Display > 
Corner Adjustment menu and press [Enter]. 
This will bring up the  Corner Adjustment 
page.
2.  Press /// to select the corner you wish to   
adjust, and then press [Enter].
3.  Press / to select a suitable adjustment 
method and then...

28
Zoom	out	for	detailed	review
You may need to expand the image to inspect details in the projected imag\
e. Use the 
arrow keys to move the images.
• Using the remote control
1.  Press the 
 on the remote to bring up the Zoom Bar.
2.  Press  repeatedly to expand the image to the desired dimension.
3.  To browse the image, press [Enter] to switch to displacement mode and use\
 the 
arrow keys (, , , ) to move the image for browsing.
4.  To shrink the image, press [Enter] again to return to the Zoom...

29
About the aspect ratio
	
In	the	picture	below,	the	black	portions	are	inactive	areas	and	the	white	portions	are	active	
areas. OSD menus can be displayed on those unused black areas.
1.   Auto: Proportional scaling of an image to fit the 
projector’s natural resolution in its horizontal 
width. This is suitable where the incoming image 
is neither in 4:3 nor 16:9 aspect ratios but where 
you want to make most use of the screen without 
altering the image’s aspect ratio.
Image 16:10
Image 16:9
2.  4:3:...

30
Optimizing the image
Selecting a picture mode
The projector is preset with several predefined picture modes. You may choose one of 
these modes that best fits your operating environment and input signal picture type.To select an operation mode that suits your need, please follow the steps\
 described 
below.
•  Press [Color Mode] repeatedly until you arrive at the mode you desire.
•  Enter Display > Color mode menu and press  / to select the required mode.
Picture modes for different types of...

31
Fine-tuning of image quality in user modes
You may use several user-defined functions if the projector detects certain signal 
types. You can make adjustments to these functions based on your needs.
Adjusting	Brightness
Enter Display > Brightness	menu and then press 
 / .
The higher the value, the brighter the image. And 
lower the setting, darker the image.
Adjusting this control allows the black area of the image to appear just\
 as black to 
reveal details within.
Adjusting Contrast
Enter Display...

32
Adjusting	Brilliant	Color
Enter Display > Advanced >	Brilliant	Color	menu, and then press  /.
This feature utilizes a new color-processing algorithm and system level \
enhancements to 
enable higher brightness while providing truer, more vibrant colors of the projected image. 
Brightness levels of mid-tone areas commonly seen in videos and natural \
landscapes 
are increased by more than 50%, allowing the projector to generate image\
s in realistic 
and true colors. To acquire this quality of...

33
Color Management
Only in permanent installations with controlled lighting levels such as \
boardrooms, lecture 
theaters, or home theaters, should color management be considered. Color\
 management 
provides fine color control adjusent to allow for more accurate color reproduction, should 
you require it.
If you have purchased a test disc that contains various color test patte\
rns that can be used 
to test the color presentation of monitors, TVs, and projectors, any image from the disc can 
be...