EIA GRAY SCALE EIA灰度

技术参数

Data: The EIA grayscale pattern is a standard 2" square projection slide. It 

contains two parallel gray scales. The upper scale has nine nominally equal 

transmission steps while the lower contains the same number of nominally equal 

density steps. The transmission values range from 3% to 60%, corresponding to 

density values of 1.52 and 0.22 respectively. The slide is chrome on glass and 

densities are achieved by a fine halftone pattern.

数据：环评灰度模式是一个标准的2”平方投影幻灯片。它包含两个平行的灰度。上规模的有九个名义上的平等传输步骤，而较低的包含相同数量的名义上的平等

密度的步骤。传输值的范围从3%到60%，相应的分别为1.52和0.22的密度值。滑动的玻璃和铬密度是由细的半色调模式实现。