How we test cameras, lenses, and smartphones

We undertake all DxOMark camera sensor, lens, and mobile device tests in a dedicated camera testing lab that is equipped with test targets, lighting systems, light-boxes, light-meters, telemeters, spectrometers, and other specialized equipment. For our DxOMark Mobile tests, we also include perceptual testing that is based on a large variety of real-life test scenes. We have carefully designed all test protocols to be bias-free and to ensure repeatability of measurements. Below you can find brief summaries of our DxOMark camera sensor, lens, and mobile test protocols, including links to more in-depth descriptions.

For our DxOMark Camera Sensor reviews, we measure the image quality of camera sensors that can record images in RAW format, and all analysis is undertaken before demosaicing or JPG processing. The DxOMark camera sensor sub-scores and overall scores are based on the following criteria:

Please read our detailed article on the DxOMark Camera Sensor test protocol for more information about our test methodology and scores.

For our DxOMark Lens reviews, we measure the performance of interchangeable lenses on cameras that can record images in RAW format.The DxOMark lens sub-scores and overall scores are based on the following criteria:

Please read our detailed article on the DxOMark Lens test protocol for more information about our test methodology and scores.

For our DxOMark Mobile reviews, we analyze the performance of the imaging pipeline in its entirety, including lens, sensor, camera control, and image processing. Testing is based on the smartphone camera’s JPG output and also covers video mode. In addition to testing in the lab and objective evaluation, the DxOMark Mobile protocol includes a large component of perceptual evaluation that makes use of more than 50 challenging and realistic indoor and outdoor scenes. The DxOMark Mobile sub-scores and overall scores for Photo are based on the following criteria:

The Video sub-score is calculated from the following sub-score criteria:

  • Exposure
  • Color
  • Texture and noise
  • Autofocus
  • Artifacts
  • Stabilization

Please read our detailed article on the DxOMark Mobile test protocol for more information about our test methodology and scores.