DxOMark

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

DxOMark 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:

Another metric, the Perceptual MegaPixel (P-MPix) is used to rate the resolution a camera produces when paired to a particular lens.[3] DxO Labs 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[4][5][6][7] 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).[8]

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.[9] More recently, DxOMark has also evaluated drone cameras for image quality.[10]

DxOMark Lens rating

DxOMark also provides lens ratings, as tested in combination with various camera models.[11][12]

DxOMark Mobile rating

As smartphones overtake point-and-shoot cameras,[13] DxO Labs started testing smartphones and other mobile devices in 2011 and introduced DxOMark Mobile in 2012.[14]

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:

DxOMark's Mobile Video score includes the same categories as DxOMark's Mobile Photo score, except that Flash is replaced by Stabilization.

DxOMark's tests are conducted under a variety of lighting conditions, ranging from low light 5 lux to bright daylight outdoors.[15]

DxOMark 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.[16][17]

DxOMark usage in industry

DxOMark ratings are often used by the press to describe the image quality characteristics of their cameras and mobile devices.[15][18][19][20] High DxOMark Mobile ratings have also been featured as hallmarks of quality in vendor announcements,[21] although reviewers are careful to note that the ratings only reflect image quality.[22][23]

References

  1. ↑ DxO. "What is DxOMark? | DxOMark". Retrieved 2016-08-23.
  2. ↑ DxO. "DxOMark by DxO | DxOMark". www.dxomark.com. Retrieved 2016-08-24.
  3. ↑ http://www.dxomark.com/index.php/Publications/DxOMark-Reviews/Looking-for-new-photo-gear-DxOMark-s-Perceptual-Megapixel-can-help-you
  4. ↑ http://petapixel.com/2012/12/17/perceptual-megapixel-mtf-charts-boiled-down-to-a-single-number/
  5. ↑ http://photo.net/photography-news-forum/00b9IO
  6. ↑ http://timgrey.com/blog/2013/dxomark-introduces-the-perceptual-megapixel/
  7. ↑ http://news.cnet.com/8301-17938_105-57559599-1/dxo-labs-tries-making-sense-of-camera-lens-sharpness/
  8. ↑ http://www.dxomark.com/index.php/Lenses/Camera-Lens-Ratings/Optical-Metric-Scores
  9. ↑ "DxOMark Sensor For Benchmarking Cameras - Luminous Landscape". Luminous Landscape. Retrieved 2015-11-14.
  10. ↑ DxO. "DxOMark benchmarks for popular drone camera sensors | DxOMark". Retrieved 2017-06-15.
  11. ↑ "Camera Lens Ratings by DxOMark | DxOMark". www.dxomark.com. Retrieved 2015-11-11.
  12. ↑ "A Simple Guide to the DxOMark Numbers – Daystar". daystarvisions.com. Retrieved 2015-11-11.
  13. ↑ Daisuke Wakabayashi, "The Point-and-Shoot Camera Faces Its Existential Moment", Wall Street Journal July 30, 2013 [1]
  14. ↑ Lexy Savvides. "Smartphones outperforming high-end compact cameras". Retrieved February 15, 2014.
  15. 1 2 "iPhone 7 Has Third Best Smartphone Camera DxOMark Has Ever Tested". PetaPixel. 2016-09-28. Retrieved 2016-11-13.
  16. ↑ "A Simple Guide to the DxOMark Numbers – Daystar". daystarvisions.com. Retrieved 2016-08-23.
  17. ↑ "How do I Use DxOMark? | Northrup.Photo". northrup.photo. Retrieved 2016-08-23.
  18. ↑ "HTC 10 gets the same DXOMark score as Galaxy S7". 2016-04-12. Retrieved 2016-08-23.
  19. ↑ "Leading Camera Lab Report: Samsung Galaxy S7 Edge Named New Smartphone Camera Champion - Samsung Newsroom". 2016-03-18. Retrieved 2016-08-23.
  20. ↑ "How Google hopes its Pixel camera will win over iPhone fans". CNET. Retrieved 2016-11-13.
  21. ↑ "8 times Google savagely burned Apple during the Pixel announcement". Macworld. Retrieved 2016-11-13.
  22. ↑ Bagnell, Juan Carlos (2016-10-04). "Google Pixel: A great DXOMARK score doesn’t mean "The best smartphone camera"". Pocketnow. Retrieved 2016-11-13.
  23. ↑ "Who's hiding behind DxOMark scores? - AndroidPIT". AndroidPIT. Retrieved 2017-06-15.
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.