You might have seen images of old TVs with a series of colorful bars, called a test pattern. What were these for, and are ...

The patterns were really calibration tools for engineers, helping the TV technicians adjust the quality of the transmission and you at home could adjust your rabbit ears.

Ironically the color has faded for this film. The SMPTE Color Television Test (1965) film serves two main purposes: it helps in achieving color balance for color television transmission and allows ...

Note: we're showing you how to use the test screens to calibrate your TV. However, you can also use these screens to calibrate your computer's display or monitor!