Test color banding

The screen gradient test is used to check the quality of color reproduction, transitions between shades, and the uniformity of screen display. This is important for identifying issues like banding (visible color stripes instead of smooth transitions) or poor color grading.

What does this test include?

Gradients to check individual RGB colors:

• Red: Transition from black to red.
• Green: Transition from black to green.
• Blue: Transition from black to blue.
• Gray gradient: Smooth transition from black to white (gray shades).
• Color gradient: Smooth transition between all primary colors: from red through orange, yellow, green, cyan, blue, and violet.

Checking transitions

Check to ensure that the transitions in the gradients are smooth.

If you see “banding” or “steps,” this indicates insufficient color depth or issues with the display's color reproduction.

Compare the colors

• Ensure that red, green, and blue gradients are displayed correctly.
• Check that the gray gradient does not have any color tints.
• Perform the test in a dark room to enhance visibility and eliminate ambient light interference.

Display settings

Make sure the color depth of your display is set to 24 or 32 bits (True Color).

Check the brightness, contrast, and color temperature settings.

Test results

Excellent: Gradients are smooth with no visible banding.

Unsatisfactory: Banding is visible, colors are incorrect, or the gray gradient has tints.

Application scenarios

• For testing Smart TVs, monitors, and phones.
• To check display quality when purchasing new devices.
• Optimizing display color settings.