Teletext-Tools 766 — Gradient Test

FULLSCREEN GRADIENTS

P766

Use gradients to spot banding, tint shifts, and uneven panels.

Exit: press ESC (or tap/click screen).

SETUP

766

CHOOSE GRADIENT

TYPE

DIR

LUMA = black→white. RGB = colour sweep. SAT = grey→colour.

Tip: lower brightness to make banding more visible.

STATUS

READY

Tap gradient screen to exit quickly.

ESC exits fullscreen and returns to tool.

Try also: 769 banding test.

Quick jump: 761 Black • 762 White • 769 Banding Test

HOW TO USE

1) Pick TYPE and DIR

2) Press START (gradient appears)

3) Optional: press FULLSCREEN

4) Exit: ESC or tap

WHAT TO LOOK FOR

Banding: visible steps instead of smooth fade

Tint: edges shift pink/green/blue

Dirty screen: patches when viewing close

QUICK TIPS

Try HORIZ then VERT (some panels vary by axis).

Turn off “night shift” / blue-light filters for neutral testing.

Use moderate brightness to reduce glare.

FAQ

Why do I see lines? that’s banding (or compression on some screens).

Is it my phone? often yes — panels differ widely.

Does fullscreen change it? sometimes (scaling / colour mgmt).

Should I max brightness? not necessary; try mid first.

OLED / IPS NOTES

OLED: can show tint at low brightness.

IPS: may show glow at angles (view straight on).

PWM dimming: some phones flicker when very low.

SAFETY

Photosensitive users: avoid rapid switching.

Heat: long fullscreen at high brightness warms devices.

MINI BLOG

A smooth gradient is one of the fastest ways to spot banding.

If the fade looks “steppy”, your panel (or its processing) is quantising the shades.

Use LUMA for greys, then RGB to check colour transitions.

KEYWORDS

gradient test • banding test • screen uniformity

tint shift • display gradient • monitor banding check