Garmin 74C User Manual

The brightness of an image depends on the source you are projecting 
and the amount of light in the room. If the image is too bright or not 
bright enough, here are two ways you can adjust it:

■

Change the 

Brightness

 setting in the Image menu. See page 49.

■

Select 

Low

 or 

High

 for the 

Brightness Control

 option in the 

Advanced menu. (See page 54.) Low brightness mode extends the 
life of the lamp and decreases the fan noise.

You may want to adjust the color mode to select a different setting 
that is appropriate for the image you’re projecting and the 
environment in which you’re projecting it.

If you’re projecting computer or RGB video images, the default color 
mode is 

Presentation

, which is appropriate for presentations in 

bright rooms. For other images, the default color mode is 

Dynamic

, 

which optimizes video images using natural colors.

The following table lists the 6 color modes available.  

sRGB

Use when projecting computer images conforming to 
the sRGB color standard (the default setting when 
projecting from a computer with analog video)

Dynamic

Best for projecting movies with vivid color in bright 
rooms.

Presentation

Use when you’re projecting a presentation in a bright 
room.

Theater

Use when projecting movies in a dark room.

Living Room

Best for playing video games or watching TV in a 
bright room.

Blackboard

Choose this fixed color mode when you need to 
project against a green blackboard.