The projector is a vital role in the home theater (for the composition of the home theater, see: "The old snail teaches you to match the equipment of the home theater"), the quality and adjustment of the quality directly affect the overall view Shadow experience, in the process of setting up a home theater, the first task is to match the equipment, and then the installation and debugging of various audio and video equipment, which is also the top priority of the post work, let's talk about how to do a home theater The tuning of the four important parameters of the projector:
Ladder correction
When the bottom of the projector is not projected on a plane, the projected picture will not be rectangular, but will become trapezoidal. The digital trapezoidal correction means that the screen is adjusted to become a square by the calculation of the scaler. Here's a picture of how you raised the projector:
If you raise the end of the projector, it will cause another trapezoidal phenomenon. You can adjust the picture to the rectangle through the keystone correction.
When the projector has to be placed sideways because it cannot be placed in front of the screen due to environmental conditions, it will cause another trapezoidal phenomenon, as shown below. At this point, you need to adjust the picture with horizontal keystone correction. In general, horizontal trapezoidal correction is less useful than vertical trapezoidal correction.
Optoma Optoma's recommendation is to avoid trapezoidal correction as much as possible, unless the environment is limited. Because the trapezoidal correction is calculated by the scaler, the sharpness of the picture will be worse.
Compared
In the projector industry, contrast is defined as the difference between the brightest and darkest parts of an image. For example, a comparison of 2000:1 means that the brightest white light output is 2000 times the darkest black portion of the light output. The contrast performance of a projector is excellent or not. This projector can show how much detail in the dark scene; the higher the contrast, the more detail the dark scene can see.
Adjusting the contrast on a projector is actually controlling the brightness of the entire picture. Adjusting brightness and contrast is the key to correcting the performance of a projector. In the professional adjustment DVD, there is a dedicated screen that allows the professional adjuster to adjust the contrast and brightness so that the most details are visible in both the bright and dark parts.
brightness
The brightness of the projector is expressed in lumens. The higher the lumen, the brighter the projector.
The Brightness option in the projector interface controls the black level of the projector. Professional tuning films, such as Avia, have the option to adjust Brightness. But a projector should perform well, and the coordination of brightness and contrast is the most important.
color
Color adjustments are visible on most monitors. This option is mainly used to adjust the color saturation of the overall picture. An image that is too saturated will look fake, and a picture that is not saturated will look a bit pale and dull.
Whether you are a home theater enthusiast or anxious to buy a home theater, you are recommended to add the WeChat public number of the home theater network: "cnhifi", we will push the latest practical home theater technical information every day, and constantly send the spirit to the enthusiasts Let's join us.
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