Gamma Test
Check your display's tonal response with visual gamma reference patterns.
Gamma 2.2 Fusion
Keys: ← / → switch · F full screen · Esc exit
Choose test mode
Step back until the stripes blend into a smooth gray. Compare the blended area with the adjacent reference.
Reference targets
- 1.8Historical reference
- 2.0
- 2.2Common SDR reference
- 2.4Video and cinema workflows
2.2 is a common reference, not a universal default.
What do you see?
An approximate visual match, not a measurement.
Visual approximation only. It cannot measure the display's gamma curve or calibrate the display.
Guide
How to test
01
Set normal viewing conditions
Use your normal display brightness and typical room lighting.
02
Set browser zoom to 100%
Keep browser zoom at 100% so the fine stripe patterns are displayed consistently.
03
Go Fullscreen
Start the test, then press F to view the patterns fullscreen.
04
Step back and compare
Move back from the screen until the fine stripes visually blend, then compare them with the reference.
05
Check dark and bright detail
Inspect the shadow and highlight patterns for merged tones.
06
Record Observations
Choose the result that best matches what you see.
About
About this test
Visual inspection only
This test provides a visual approximation of tonal response using gamma reference patterns. A browser cannot measure the display's physical gamma curve or luminance response.
What can affect the result
Browser zoom and scaling, display brightness, viewing distance, ambient light, viewing angle, OS and GPU processing, color management, and display settings can affect what you see.
Calibration
This tool can help identify visible tonal differences, but accurate gamma calibration requires measurement hardware such as a colorimeter and appropriate calibration software.
How it differs
Gamma Test
Tonal response and visual gamma approximation.
Greyscale and Uniformity
Shade discrimination and spatial evenness.
Black Level
Black depth and near-black visibility.
Contrast Test
Separation between dark and bright extremes.
What is Gamma Test?
A Gamma Test shows fine stripe patterns beside solid gray references so you can visually compare tonal response against common gamma targets. It is a visual approximation only and does not measure the display's physical gamma curve or calibrate the display.
FAQ
Gamma Test FAQ
01What is gamma on a monitor?
Gamma describes how brightness levels are represented between black and white. It affects how light and dark tones appear.
02What gamma should my monitor use?
Gamma 2.2 is a common reference for general computer use and web content. Other targets can be appropriate for specific workflows.
03How do I test my monitor gamma?
Use the gamma pattern and step back until the fine pattern visually blends with the reference area. Compare the available reference levels.
04Why do the stripes disappear when I move away from the screen?
The fine alternating pattern becomes harder for your eyes to distinguish as you move farther away. That is part of how this visual gamma test works.
05Can this test measure my exact gamma?
No. It provides a visual approximation and does not directly measure the display's physical gamma curve.
06Can this test calibrate my monitor?
No. Accurate display calibration requires measurement hardware such as a colorimeter and appropriate calibration software.