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Webcam Exposure & Dynamic Range Test

Professional broadcast exposure diagnostics: live Zebra stripes warning for blown-out highlights, False Color IRE luminance mapping, and clipping shadow/highlight percentage metrics.

0-5% Crushed Black 5-20% Underexposed 45-55% Middle Gray 60-70% Skin Tones 85-95% Near White 95-100% Blown Highlight
Average Frame IRE 0% Ideal video call: 45% - 65%
Highlight Clipping 0.0% Blown out pixels
Shadow Clipping 0.0% Pure crushed black
Exposure Health Optimal Dynamic range balance
Webcam Exposure & Brightness Guide

How to Use This Test

  1. Click "Start Camera" to load your live video feed.
  2. Turn on "Highlight Zebra Stripes" to highlight any areas that are excessively bright.
  3. Check the Average Scene Luminance (45%–65% is ideal for clear, natural video calls).
  4. If the Exposure Health status is "Under-exposed" or "Over-exposed", adjust your desk lamp or use the exposure slider below.

What Are Zebra Stripes?

Zebra stripes are an easy visual tool borrowed from video cameras. When turned on, diagonal stripes appear over blown-out areas (like a bright ceiling lamp or glare on your forehead). A few small stripes are fine, but large stripes across your face mean your lighting is too harsh.

Why Your Face Looks Dark in Front of Windows

Webcams measure total scene brightness. If you have an open sunny window behind you, the camera dims the entire video so the window doesn't look blown out, leaving your face in shadow. To fix this, place your light source in front of you or draw the blinds.

Understanding Noise & Grain in Dim Rooms

When there isn't enough light, the webcam electronically boosts sensor gain to brighten the image. This creates visible grainy specks and slows down your frame rate. Adding even a modest desk lamp in front of your monitor dramatically cleans up video quality.