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Sample Size: 64px

Larger samples are more accurate but slower

Analysis Results

Select an image to analyze noise levels

Understanding Noise

  • Luminance noise: Grainy texture, like film grain
  • Chroma noise: Random color speckles, more objectionable
  • SNR: Higher is better (more signal, less noise)
  • Causes: High ISO, long exposures, small sensors, underexposure
  • Solutions: Lower ISO, better lighting, noise reduction software