color bars with pluge scale



Pluge is an acronym standing for 'Picture Line-Up Generation Equipment'. When setting the brightness level of a monitor intended to display the most correct interpretation of a digital cameras output you need to generate a chart that displays the PLUGE bars. 

There is black pluge and white pluge but black is the most commonly calibrated. When the pluge is displayed on the monitor, brightness should be adjusted so that you can just barely see the lightest of the multiple darkest gray scale bars.