DxO Labs

From Wikipedia, the free encyclopedia
  (Redirected from DxOmark)
Jump to: navigation, search

DxO Labs is a software company based in Boulogne-Billancourt, France, that develops image processing software and maintains a website with technical measurements of lenses and cameras (Sensor Rating Score and Camera & Lenses Rating Score).[1]


DxO OpticsPro[edit]

DxO OpticsPro is software which corrects various optical aberrations, notably image distortion, with corrections tuned to particular lenses and cameras. It also adjusts lighting and color rendering. The software reads the Exif file to gather information about the camera, the lens and the settings that were used.

Its automatic optical adjustment can fix:[2]

  • Distortion of curved line (should be straight)
  • Color fringes
  • Light fall off of vignetting
  • Make same sharpness (not soft) from center to corners

DxO ViewPoint[edit]

DxO ViewPoint allows the user to correct perspective and lens distortions, especially those caused by shooting with wide-angle lenses when the subject is not in the middle of the frame.[3]

DxO FilmPack[edit]

DxO FilmPack emulates the appearance of various conventional films digitally.[4]

DxO Analyzer[edit]

DxO Analyzer is a suite of software tools, test targets, and test equipment 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. DxO Analyzer is also the analysis engine behind the company's DxOMark image quality rating website.[5][6][7] Results can be displayed either numerically or graphically.[8]

DxO Analyzer includes modules for testing optics, sensors, stabilization, video, timing, and 3D features.[9]

DxO ONE[edit]

The DxO ONE is a phone-connected-camera. It is a small 20-megapixel, 1-inch-sensor, f1.8 camera which plugs into a Lightning connector of an iPhone or iPad and uses their displays to frame and shoot an image.[10]

DxOMark web site[edit]

DxO sensor rating[edit]

The DxOMark Sensor Score measures the RAW image quality data without considering the resolution, speed or lens sharpness.
DxOMark Sensor Overall Score consists of three components:

  • Color Depth for Portrait
  • Dynamic Range for Landscape
  • Low-light ISO for Sports

The Perceptual MegaPixel (P-MPix) rates the resolution a camera produces when paired to a particular lens.[11] DxO Labs claims that P-MPix is a more accurate and relevant value for photographers to consider when evaluating camera sharpness[12][13][14][15] As of June 2014, the Carl Zeiss Apo Sonnar T* 2/135 ZF.2 lens mounted on a Nikon D800E have the highest measured P-MPix. [16]

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.[17]

DxO lens rating[edit]

DxOMark also provides lens ratings, as tested in combination with various camera models.[18][19]

DxO mobile rating[edit]

As smartphones overtake point-and-shoot cameras,[20] DxO Labs started testing smartphones and other mobile devices in 2011 and introduced DxOMark Mobile in 2012.[21]

DxOMark Mobile is Mobile Overall Score and consists of: DxOMark Mobile Photo and DxOMark Mobile Video.

DxOMark Mobile Photo consists of details as below:

  • Exposure and control
  • Color
  • Autofocus
  • Texture
  • Noise
  • Artifacts
  • Flash

DxOMark Mobile Video details is same as DxOMark Mobile Photo details, except flash is replaced by stabilization.


  1. ^ DxOMark Camera Sensor Ratings (needs Flash)
  2. ^ "DxO Optics Pro Software". Retrieved June 18, 2013. 
  3. ^ "DxO ViewPoint". PCMAG. Retrieved 2015-11-08. 
  4. ^ Debbie Grossman; Jonathan Barkey (December 16, 2008). "Editor's Choice 2007: Imaging Software". Popular Photography. Retrieved 4 August 2014. 
  5. ^ "Lens Reviews Explained". dpreview.com. Retrieved 2015-11-08. 
  6. ^ "Popular Photography: How We Test". Popular Photography. Retrieved 2015-11-08. 
  7. ^ "Publication Partagée". www.chassimages.com. Retrieved 2015-11-08. 
  8. ^ "How we test lenses - SLRgear.com!". www.slrgear.com. Retrieved 2015-11-08. 
  9. ^ "DxO Analyzer 5 | PhotographyBLOG". www.photographyblog.com. Retrieved 2015-11-11. 
  10. ^ Lori Grunin (18 June 2015). "DxO One adds a new twist to the iPhone-connected camera". CNET. Retrieved 2 August 2015. 
  11. ^ http://www.dxomark.com/index.php/Publications/DxOMark-Reviews/Looking-for-new-photo-gear-DxOMark-s-Perceptual-Megapixel-can-help-you
  12. ^ http://petapixel.com/2012/12/17/perceptual-megapixel-mtf-charts-boiled-down-to-a-single-number/
  13. ^ http://photo.net/photography-news-forum/00b9IO
  14. ^ http://timgrey.com/blog/2013/dxomark-introduces-the-perceptual-megapixel/
  15. ^ http://news.cnet.com/8301-17938_105-57559599-1/dxo-labs-tries-making-sense-of-camera-lens-sharpness/
  16. ^ http://www.dxomark.com/index.php/Lenses/Camera-Lens-Ratings/Optical-Metric-Scores
  17. ^ "DxOMark Sensor For Benchmarking Cameras - Luminous Landscape". Luminous Landscape. Retrieved 2015-11-14. 
  18. ^ "Camera Lens Ratings by DxOMark | DxOMark". www.dxomark.com. Retrieved 2015-11-11. 
  19. ^ "A Simple Guide to the DxOMark Numbers – Daystar". daystarvisions.com. Retrieved 2015-11-11. 
  20. ^ Daisuke Wakabayashi, "The Point-and-Shoot Camera Faces Its Existential Moment", Wall Street Journal July 30, 2013 [1]
  21. ^ Lexy Savvides. "Smartphones outperforming high-end compact cameras". Retrieved February 15, 2014. 

External links[edit]