it. Additionally, research has proven this aspect ratio artistically
sound because it duplicates the dimensions of normal human vision,
horizontal range onethird greater than the vertical range. Therefore,
when you design graphics for a television production using this ratio,
it allows for maximum use of the picture area and correct framing by the
b. Onesixth Rule. When creating graphics for television
productions, you must consider the edge loss television cameras have.
projector crops the graphic image and shows the cropped image on the
screen. The television camera crops the image as it picks up the image,
and the monitor or television crops it again before you see it. In
other words, the television system crops the image twice. To overcome
this loss, you must build in a safety field using the onesixth rule.
(1) Applying the onesixth rule. To apply this rule, you divide
the camera field (the total area of the picture) into six equal parts,
vertically and horizontally. The area comprised of the 16 center
rectangles make up the safe area (figure 216). This is the area where
you place the important features of the graphic (figure 217).
Figure 216. Safety field (onesixth rule)