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Simple question - tough answer.

There is currently no single "industry standard" for measuring image quality.

Some aspects to consider:

  • Color Reproduction (lens & sensor)
  • ISO Performance (sensor)
  • Sensor Size & Resolution (sensor)
  • Dynamic Range (sensor)
  • Image Sharpness (lens)
  • CA Performance / Correction (lens)
  • Light Falloff / Vignetting (lens)
  • ...and others

Digital cameras are bending and capturing light and storing that as a bunch of "1"s (ones) and "0"s (zeros). The number and complexity of the variables is staggering when you get into the details.

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Q: How is image quality measured on digital cameras?
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