Contrast Test — Count RGB 1-16 Dark Squares
Professional Contrast Inspection
A professional contrast test: count the near-black squares you can resolve over a continuous dark gradient, with bright-end and B/W extreme modes to evaluate static contrast objectively.
16 Dark Squares
RGB 1-16 near-black patches over a 0→30 gradient, with 3/5/8/12 markers to aid counting.
16 Bright Squares
Near-white 239-254 patches check highlight separation and clipping.
B/W Extreme Mode
Checkerboard and fine stripes stress black/white separation and edge rendering.
Understanding Contrast
Static Contrast
The only meaningful ratio: whitest vs blackest in one frame. TN 600-1000, IPS 1000-1500, VA 3000-5000, OLED theoretically infinite.
Dynamic Contrast
The “millions:1” marketing number, achieved by dimming the whole backlight — practically meaningless.
ANSI Contrast
Checkerboard same-frame measurement, closer to real usage and less gamed by local dimming.
Three Steps to Check Contrast
Count Dark Squares
In a dark room fullscreen, count the resolvable squares from the left and read the scale.
Verify the Bright End
Switch to bright mode and count likewise — merged highlights mean clipping.
Extreme Recheck
In checkerboard/stripe mode, black-white boundaries should stay sharp without bleeding.
Static Contrast by Panel
TN
600-1000:1- + Fastest response
- + Cheap
- − Lowest contrast
- − Grayish blacks
IPS
1000-1500:1- + Accurate color
- + Wide angles
- − Gray blacks
- − Glow hurts darks
VA
3000-5000:1- + Deep darks
- + Great for movies
- − Slow dark response
- − Narrower angles
OLED
∞:1- + Pixel-level black
- + HDR ceiling
- − ABL caps fullscreen
- − Burn-in risk
Pro Tips
Local Dimming Helps
High local-dimming on Mini LED greatly lifts dark-scene contrast — mind the subtitle halo tradeoff.
Ambient Light Kills Contrast
Perceived contrast collapses in bright rooms on any panel; dark-room viewing transforms the experience.
Gamma Shapes Darks
Low gamma crushes the dark squares — calibrate gamma first for a fair reading.
Ignore Dynamic Numbers
When shopping, only static or ANSI contrast matters; dynamic figures are pure marketing.
FAQ
Recommended Test Environment
- Fully dark room required
- Brightness 100% for judging
- Disable dynamic contrast
- 10-minute warm-up
- Sit 50–70cm straight on
- Calibrate gamma first for fairness