Key Video Elements

How can you obtain the best possible picture from your video display?

Adjusting the user controls on your display is a good first step. However, with all the manufacturer presets for your display inside-the-box there is little chance your video display will ever render the content as the film directors and other content providers originally intended. That is, until a trained ISF (Imaging Sciences Foundation) specialist like those at Hi-Definition Living are involved. We bring out the REAL display you didn’t know existed.

What are the 4 most important elements of a good picture?

  1. Picture Contract / Dynamic Range
  2. Picture Resolution / Picture Detail
  3. Life-like Color Accuracy
  4. Picture Uniformity

What is picture contrast and dynamic range?

Technically, it is the difference between peak white and maximum black in the display picture. The human eye perceives a higher contrast ratio as a brighter picture. The black levels in the picture have more affect on contrast ratio than white levels. We humans are black and white beings with the ability to see color. Another way of illustrating this is to think about the last time you had your eyes examined. Did you look at a black and white chart or color eye chart? It was black and white; just another way of indicating our eye’s sensitivity to contrast.

What is Resolution?

Resolution is a measure of picture detail. Generally, the higher the picture detail the more realistic the projected image will appear. Each of the above viewing standards have their own resolution. The “native” resolution is determined by multiplying the number of vertical lines by the number of horizontal lines to arrive at the total picture elements (pixels):

Standard
Length x Width
Pixels
NTSC
524 x 480
252,000
Enhanced Def TV
640 x 480
307,200
HDTV 720p
1280 x 720
921,600
HDTV 1080i
1920 x 1080
2,073,600

What is life-like color accuracy?

A display interacts with changes made to black, white, and gray levels The black and white portion of the video signal contains the majority of picture information. Color and color intensity work off these settings. The best way to get background and foreground colors into balance is with an ISF specialist. This balance is not likely to be achieved without changing the electronics presets not accessible by your user controls.

What is picture uniformity?

When light output is not consistent across a video display screen you have a picture uniformity problem. As the light output from a video display changes over the dynamic range, the color of the gray background should, ideally, remain constant at the desired white reference color. An ISF specialist can “train” the display to deliver the best results possible.