DxOMark

DxOMark is a website providing image quality ratings for standalone cameras, lenses, and mobile devices that include cameras.[1] It is owned by DxOMark Image Labs[2][3]

Camera sensor rating

The DxOMark Camera Sensor Score measures the quality of the RAW image captured by a camera.

The DxOMark Sensor Overall Score consists of three components:

  • Color Depth for Portrait photography
  • Dynamic Range for Landscape photography
  • Low-light ISO for Sports, wildlife and other action photography

Another metric, the Perceptual MegaPixel (P-MPix) is used to rate the resolution a camera produces when paired to a particular lens.[4] DxOMark claims that P-MPix is a more accurate and relevant value for photographers to consider than alternate measures of sharpness when evaluating camera and lens image quality.[5][6][7][8] As of December 2015, the Canon EF 300mm f/2.8L IS II USM lens mounted on a Canon EOS 5DS R have the highest measured P-MPix (45 P-Mpix) followed by the Carl Zeiss APO Sonnar T* 2/135 ZE (41 P-Mpix on Canon EOS 5DS R and 36 P-Mpix on Nikon D800E).[9]

DxOMark data has been used to plot the progress of sensor image quality and low-light sensitivity versus price over the years, as well as the impact of sensor size and resolution.[10] More recently, DxOMark has also evaluated drone cameras for image quality.[11]

Lens rating

DxOMark also provides lens ratings, as tested in combination with various camera models.[12][13]

Mobile rating

As smartphones overtake point-and-shoot cameras,[14] DxO Labs started testing smartphones and other mobile devices in 2011 and introduced DxOMark Mobile in 2012.[15] A major update was made in September 2017, adding tests designed to stress the capabilities of current-model smartphones such as lower-light shooting, telephoto zoom, depth effect, and bokeh.[16]

DxOMark Mobile Overall Score is the headline number reported for each tested device, and consists of: DxOMark Mobile Photo and DxOMark Mobile Video.

DxOMark's Mobile Photo score is composed of these Categories:

  • Exposure and contrast
  • Color
  • Autofocus
  • Texture
  • Noise
  • Artifacts
  • Flash
  • Zoom
  • Bokeh[17]

DxOMark's Mobile Video score includes six of the same Sub-scores as DxOMark's Mobile Photo score (Exposure, Color, Autofocus, Texture, Noise, and Artifacts), along with Stabilization.

DxOMark's tests are conducted under a variety of lighting conditions, ranging from low light 5 lux to bright daylight outdoors.[18]

Comparison tool

Users can select several devices of the same class and have the site display a comparison of their test scores and graphical versions of the actual test data.[19][20]

Usage in industry

DxOMark ratings are often used by the press to describe the image quality characteristics of their cameras and mobile devices.[18][21][22][23] High DxOMark Mobile ratings have also been featured as hallmarks of quality in vendor announcements[24] and marketing materials[25], although reviewers are careful to note that the ratings only reflect image quality.[26][27][28] DxOMark also provides consulting services to hardware manufacturers, related to image quality.[29][30]

References

  1. ↑ DxO. "What is DxOMark? | DxOMark". Retrieved 2016-08-23.
  2. ↑ "DxOMark unveils expanded mobile benchmark suite". smartchimps.com. Retrieved 2017-10-10.
  3. ↑ DxO. "DxOMark by DxO | DxOMark". www.dxomark.com. Retrieved 2016-08-24.
  4. ↑ http://www.dxomark.com/index.php/Publications/DxOMark-Reviews/Looking-for-new-photo-gear-DxOMark-s-Perceptual-Megapixel-can-help-you
  5. ↑ http://petapixel.com/2012/12/17/perceptual-megapixel-mtf-charts-boiled-down-to-a-single-number/
  6. ↑ http://photo.net/photography-news-forum/00b9IO
  7. ↑ http://timgrey.com/blog/2013/dxomark-introduces-the-perceptual-megapixel/
  8. ↑ http://news.cnet.com/8301-17938_105-57559599-1/dxo-labs-tries-making-sense-of-camera-lens-sharpness/
  9. ↑ http://www.dxomark.com/index.php/Lenses/Camera-Lens-Ratings/Optical-Metric-Scores
  10. ↑ "DxOMark Sensor For Benchmarking Cameras - Luminous Landscape". Luminous Landscape. Retrieved 2015-11-14.
  11. ↑ DxO. "DxOMark benchmarks for popular drone camera sensors | DxOMark". Retrieved 2017-06-15.
  12. ↑ "Camera Lens Ratings by DxOMark | DxOMark". www.dxomark.com. Retrieved 2015-11-11.
  13. ↑ "A Simple Guide to the DxOMark Numbers – Daystar". daystarvisions.com. Retrieved 2015-11-11.
  14. ↑ Daisuke Wakabayashi, "The Point-and-Shoot Camera Faces Its Existential Moment", Wall Street Journal July 30, 2013 [1]
  15. ↑ Lexy Savvides. "Smartphones outperforming high-end compact cameras". Retrieved February 15, 2014.
  16. ↑ "DxOMark revamps its mobile testing for the phone cameras of 2017". Android Central. 2017-09-12. Retrieved 2017-09-12.
  17. ↑ "DxOMark's testing protocol for scoring smartphone cameras adds zoom, bokeh". Digital Trends. 2017-09-12. Retrieved 2017-09-12.
  18. 1 2 "iPhone 7 Has Third Best Smartphone Camera DxOMark Has Ever Tested". PetaPixel. 2016-09-28. Retrieved 2016-11-13.
  19. ↑ "A Simple Guide to the DxOMark Numbers – Daystar". daystarvisions.com. Retrieved 2016-08-23.
  20. ↑ "How do I Use DxOMark? | Northrup.Photo". northrup.photo. Retrieved 2016-08-23.
  21. ↑ "HTC 10 gets the same DXOMark score as Galaxy S7". 2016-04-12. Retrieved 2016-08-23.
  22. ↑ "Leading Camera Lab Report: Samsung Galaxy S7 Edge Named New Smartphone Camera Champion - Samsung Newsroom". 2016-03-18. Retrieved 2016-08-23.
  23. ↑ "How Google hopes its Pixel camera will win over iPhone fans". CNET. Retrieved 2016-11-13.
  24. ↑ "8 times Google savagely burned Apple during the Pixel announcement". Macworld. Retrieved 2016-11-13.
  25. ↑ "Google Pixel 2 & Pixel 2 XL | Verizon Wireless". www.verizonwireless.com. Retrieved 2018-03-08.
  26. ↑ Bagnell, Juan Carlos (2016-10-04). "Google Pixel: A great DXOMARK score doesn't mean "The best smartphone camera"". Pocketnow. Retrieved 2016-11-13.
  27. ↑ "Who's hiding behind DxOMark scores? - AndroidPIT". AndroidPIT. Retrieved 2017-06-15.
  28. ↑ "Google's New Pixel 2 Phone Cameras Are Highly Rated". Fortune. Retrieved 2017-10-05.
  29. ↑ "DxOMark scores shouldn't be your definitive camera rating system". Android Authority. 2017-10-09. Retrieved 2017-10-10.
  30. ↑ "A Summary of MKBHD's Explanation of DxOMark Ratings - Resource". Resource. Retrieved 2017-10-17.
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