Camera Test — Complete Webcam Diagnostic

The tool measures resolution, frame rate (FPS), image sharpness using Laplacian variance, noise levels with signal-to-noise ratio, brightness, color temperature, and exposure distribution. It also detects supported video codecs and maximum capabilities of your camera.

The quality score (0-100) is a weighted average of sharpness, noise level, brightness, and signal-to-noise ratio. Each metric is scored individually, then combined. Excellent (80-100), Good (60-79), Fair (40-59), Poor (0-39).

The histogram shows the distribution of pixel brightness values in real-time. A well-exposed image has a spread across the full range. Peaks on the left indicate underexposure, peaks on the right indicate overexposure. The RGB channels help identify color casts.

Low sharpness can be caused by: out-of-focus lens, dirty lens, low resolution, heavy compression, or poor lighting. Clean your camera lens, ensure good lighting, and focus on a detailed object to get the best sharpness score.

Yes. Use the camera selector dropdown to switch between available cameras (built-in webcam, external USB camera, etc.). Each camera is tested independently with its own metrics.