DXOMARK

DXOMARK is a website that calls itself "an independent benchmark that scientifically assesses smartphones, lenses and cameras".[1][2] Founded in 2008, it is owned by DXOMARK Image Labs and is headquartered in Boulogne-Billancourt, Paris, France.[2][3][4] DXOMARK Image Labs was spun off from DxO Labs in September 2017, and was later re-branded to DXOMARK in 2019.[5][6]

DXOMARK
Type of site
Benchmark
Available inEnglish or Chinese
HeadquartersBoulogne-Billancourt, Paris, France
Area servedWorldwide
OwnerDXOMARK Image Labs
URLdxomark.com
Alexa rank 10,424 (Global, January 2019)
Launched2008
Current statusActive

Camera Sensor rating

The DXOMARK Sensor Score measures several important image quality metrics of the RAW image captured by a camera's sensor. The overall score is a confidential combination of three sub-scores:

  • Color Depth, measured in bits, called a Portrait score
  • Dynamic Range, measured in stops of dynamic range, called a Landscape score
  • Low-light performance, measured in an ISO equivalent, called a Sports score

Another metric, the Perceptual MegaPixel (P-MPix) is used to rate the resolution a camera produces when paired to a particular lens.[7] 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.[8][9][10][11] As of December 2015, the Canon EF 300mm f/2.8L IS II USM lens mounted on a Canon EOS 5DS R has 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).[12]

Lens rating

DXOMARK also provides lens ratings, as tested using its proprietary toolset in combination with various camera models.[13][14][15]

Camera rating

As smartphones began to overtake point-and-shoot cameras,[16] DXOMARK began testing smartphones and other mobile devices in 2011 and introduced DXOMARK Mobile in 2012.[17] 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.[18] In September, 2019, the Mobile score was renamed DXOMARK CAMERA.[19]

DXOMARK Camera Overall Score is the headline number reported for each tested device, and consists of a proprietary combination of DXOMARK Camera Photo and DXOMARK Camera Video category scores.

DXOMARK's Camera Photo score is a proprietary combination of nine category sub-scores:

  • Exposure and contrast
  • Color
  • Autofocus
  • Texture
  • Noise
  • Artifacts
  • Night (enhanced from Flash, September, 2019)[20]
  • Zoom
  • Bokeh[21]
  • Wide (added September, 2019)[19]

DXOMARK's Camera 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 by the company's technical staff under a variety of lighting conditions, ranging from low-light 1 Lux to bright daylight outdoors.[22]

Sub-scores are combined using a proprietary and confidential mapping into an overall score. Tests are also confined to default modes, except for Zoom and Bokeh, which has caused reviewers to be cautious when using them.[23]

Selfie-camera rating

As of 22 January 2019, DXOMARK has started testing the front-facing (selfie) cameras on smartphones.[24] Selfie tests are done for both Photo and Video. For Photo there are sub-scores for Exposure, Color, Focus, Texture, Noise, Artifacts, Flash, and Bokeh. For Video, sub-scores include Exposure, Color, Focus, Texture, Noise, Artifacts, and Stabilization.[25]

Smartphone Audio rating

In October, 2019 DXOMARK introduced a new Audio benchmark for smartphones. Phones are tested for playback using their speakers, and for recording using their built-in microphones. Tested categories include:

  • Timbre (frequency response, treble/midrange/bass, total balance, volume dependency)
  • Dynamics (attack, bass precision, punch, volume dependency)
  • Spatial (wideness, balance, distance, localization)
  • Volume (maximum, minimum, user volume consistency)
  • Artifacts (noise, pumping, clipping, user artifacts, other artifacts)
  • For Recoding only: Background (directivity, noise profile, artifacts)[26][27]

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.[28][29]

Analyzer

Analyzer is a suite of software tools published by DXOMARK, that includes test targets and test equipment . Its is used by camera companies as well as press publications and websites to test sensors, lenses, and standalone cameras, as well as mobile devices with cameras. Testing can be performed on both RAW and JPEG images, as well as video. Analyzer is also the analysis engine behind DXOMARK.com[30][31][32] Results can be displayed either numerically or graphically.[33] Originally introduced by DxO Labs, Analyzer is now a product of DXOMARK, which has been spun out from DxO.[34][35]

Analyzer includes modules for testing optics, sensors, stabilization, video, timing, and 3D features.[36]

Usage in industry

DXOMARK ratings are often used by the press to describe the image quality characteristics of their cameras and mobile devices.[22][37][38][39] High DXOMARK Camera ratings have also been featured as hallmarks of quality in vendor announcements[40] and marketing materials[41], although reviewers are careful to note that the ratings only reflect image quality.[42][43][44] DXOMARK also provides consulting services to hardware manufacturers, related to image quality.[45][46]

gollark: Genius, yes.
gollark: Okay, fine, any amount up to 8.
gollark: Hey, what if it allows the length to be *any* amount of bytes for space-efficiency?
gollark: Ah, logos, come to hear about length-terminated strings?
gollark: AutoBotRobot is performant. AutoBotRobot is easy. AutoBotRobot is well-designed. AutoBotRobot *is* the future.

References
  1. "Honor ranks #2 in the world of smartphone cameras". Esquire Middle East. Retrieved 2019-12-09.
  2. "What is DxOMark? | DxOMark". Retrieved 2019-10-27.
  3. "DxOMark unveils expanded mobile benchmark suite". smartchimps.com. Retrieved 2017-10-10.
  4. "DxOMark by DxOMark Image Labs | DxOMark". www.dxomark.com. Retrieved 2016-08-24.
  5. "DxOMark splits from DxO Labs, is now an independent privately-owned company". DPReview. Retrieved 2019-03-22.
  6. Mazanec, Goraud (September 26, 2019). "DXOMARK: Huawei Mate 30 Pro camera score will be announced toda". Gearbest. Archived from the original on 2019-09-29.
  7. "Archived copy". Archived from the original on 2013-05-26. Retrieved 2016-08-23.CS1 maint: archived copy as title (link)
  8. http://petapixel.com/2012/12/17/perceptual-megapixel-mtf-charts-boiled-down-to-a-single-number/
  9. http://photo.net/photography-news-forum/00b9IO
  10. "Archived copy". Archived from the original on 2013-08-27. Retrieved 2016-08-23.CS1 maint: archived copy as title (link)
  11. http://news.cnet.com/8301-17938_105-57559599-1/dxo-labs-tries-making-sense-of-camera-lens-sharpness/
  12. "Archived copy". Archived from the original on 2013-05-26. Retrieved 2016-08-23.CS1 maint: archived copy as title (link)
  13. "Camera Lens Ratings by DxOMark | DxOMark". www.dxomark.com. Retrieved 2015-11-11.
  14. "A Simple Guide to the DxOMark Numbers – Daystar". daystarvisions.com. Retrieved 2015-11-11.
  15. "Skylock1". Friday, 4 January 2019
  16. Daisuke Wakabayashi, "The Point-and-Shoot Camera Faces Its Existential Moment", Wall Street Journal July 30, 2013 [1]
  17. Lexy Savvides. "Smartphones outperforming high-end compact cameras". Retrieved February 15, 2014.
  18. "DxOMark revamps its mobile testing for the phone cameras of 2017". Android Central. 2017-09-12. Retrieved 2017-09-12.
  19. Monckton, Paul. "iPhone 11's Best Camera Features Now Part Of DxOMark Tests". Forbes. Retrieved 2019-09-28.
  20. "DxOMark adds Wide and Night scores to its tests, Note 10+ tops recalculated results". GSMArena.com. Retrieved 2019-09-28.
  21. "DxOMark's testing protocol for scoring smartphone cameras adds zoom, bokeh". Digital Trends. 2017-09-12. Retrieved 2017-09-12.
  22. "iPhone 7 Has Third Best Smartphone Camera DxOMark Has Ever Tested". PetaPixel. 2016-09-28. Retrieved 2016-11-13.
  23. "What is a DXOMark Score?". PC World. Retrieved 2019-03-27.
  24. "Here are the best selfie cameras on the market, according to DxOMark". Digital Trends. 22 January 2019. Retrieved 22 January 2019.
  25. Monckton, Paul. "How DxOMark's New Test Ranks Selfie Cameras". Forbes. Retrieved 2019-03-27.
  26. Lovejoy, Ben (2019-10-10). "DxOMark audio testing begins, w. interesting results for iPhones". 9to5Mac. Retrieved 2019-10-11.
  27. Mehta, Ivan (2019-10-10). "DxOMark launches audio ranking to test recording and playback quality of phones". Plugged | The Next Web. Retrieved 2019-10-11.
  28. "A Simple Guide to the DxOMark Numbers – Daystar". daystarvisions.com. Retrieved 2016-08-23.
  29. "How do I Use DxOMark? | Northrup.Photo". northrup.photo. Retrieved 2016-08-23.
  30. "Lens Reviews Explained". dpreview.com. Retrieved 2015-11-08.
  31. "Popular Photography: How We Test". Popular Photography. Retrieved 2015-11-08.
  32. "Publication Partagée". www.chassimages.com. Archived from the original on 2016-03-04. Retrieved 2015-11-08.
  33. "How we test lenses - SLRgear.com!". www.slrgear.com. Retrieved 2015-11-08.
  34. "DxOMark splits from DxO Labs, is now an independent privately-owned company". DPReview. Retrieved 2018-03-09.
  35. "DxO Analyzer - DxOMark". DxOMark. Retrieved 2018-03-09.
  36. "DxO Analyzer 5 | PhotographyBLOG". www.photographyblog.com. Retrieved 2015-11-11.
  37. "HTC 10 gets the same DXOMark score as Galaxy S7". 2016-04-12. Retrieved 2016-08-23.
  38. "Leading Camera Lab Report: Samsung Galaxy S7 Edge Named New Smartphone Camera Champion - Samsung Newsroom". 2016-03-18. Retrieved 2016-08-23.
  39. "How Google hopes its Pixel camera will win over iPhone fans". CNET. Retrieved 2016-11-13.
  40. "8 times Google savagely burned Apple during the Pixel announcement". Macworld. Retrieved 2016-11-13.
  41. "Google Pixel 2 & Pixel 2 XL | Verizon Wireless". www.verizonwireless.com. Retrieved 2018-03-08.
  42. Bagnell, Juan Carlos (2016-10-04). "Google Pixel: A great DXOMARK score doesn't mean "The best smartphone camera"". Pocketnow. Retrieved 2016-11-13.
  43. "Who's hiding behind DxOMark scores? - AndroidPIT". AndroidPIT. Archived from the original on 2017-08-30. Retrieved 2017-06-15.
  44. "Google's New Pixel 2 Phone Cameras Are Highly Rated". Fortune. Retrieved 2017-10-05.
  45. "DxOMark scores shouldn't be your definitive camera rating system". Android Authority. 2017-10-09. Retrieved 2017-10-10.
  46. "A Summary of MKBHD's Explanation of DxOMark Ratings - Resource". Resource. Retrieved 2017-10-17.
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.