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:
- 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.[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]
DxOMark Lens rating
DxOMark also provides lens ratings, as tested in combination with various camera models.[10][11]
DxOMark Mobile rating
As smartphones overtake point-and-shoot cameras,[12] DxO Labs started testing smartphones and other mobile devices in 2011 and introduced DxOMark Mobile in 2012.[13]
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
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.[14]
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.[15][16]
DxOMark usage in industry
DxOMark ratings are often used by the press to describe the image quality characteristics of their cameras and mobile devices.[14][17][18][19] High DxOMark Mobile ratings have also been featured as hallmarks of quality in vendor announcements,[20] although reviewers are careful to note that the ratings only reflect image quality.[21]
References
- ^ DxO. "What is DxOMark? | DxOMark". Retrieved 2016-08-23.
- ^ DxO. "DxOMark by DxO | DxOMark". www.dxomark.com. Retrieved 2016-08-24.
- ^ http://www.dxomark.com/index.php/Publications/DxOMark-Reviews/Looking-for-new-photo-gear-DxOMark-s-Perceptual-Megapixel-can-help-you
- ^ http://petapixel.com/2012/12/17/perceptual-megapixel-mtf-charts-boiled-down-to-a-single-number/
- ^ http://photo.net/photography-news-forum/00b9IO
- ^ http://timgrey.com/blog/2013/dxomark-introduces-the-perceptual-megapixel/
- ^ http://news.cnet.com/8301-17938_105-57559599-1/dxo-labs-tries-making-sense-of-camera-lens-sharpness/
- ^ http://www.dxomark.com/index.php/Lenses/Camera-Lens-Ratings/Optical-Metric-Scores
- ^ "DxOMark Sensor For Benchmarking Cameras - Luminous Landscape". Luminous Landscape. Retrieved 2015-11-14.
- ^ "Camera Lens Ratings by DxOMark | DxOMark". www.dxomark.com. Retrieved 2015-11-11.
- ^ "A Simple Guide to the DxOMark Numbers – Daystar". daystarvisions.com. Retrieved 2015-11-11.
- ^ Daisuke Wakabayashi, "The Point-and-Shoot Camera Faces Its Existential Moment", Wall Street Journal July 30, 2013 [1]
- ^ Lexy Savvides. "Smartphones outperforming high-end compact cameras". Retrieved February 15, 2014.
- ^ a b "iPhone 7 Has Third Best Smartphone Camera DxOMark Has Ever Tested". PetaPixel. 2016-09-28. Retrieved 2016-11-13.
- ^ "A Simple Guide to the DxOMark Numbers – Daystar". daystarvisions.com. Retrieved 2016-08-23.
- ^ "How do I Use DxOMark? | Northrup.Photo". northrup.photo. Retrieved 2016-08-23.
- ^ "HTC 10 gets the same DXOMark score as Galaxy S7". 2016-04-12. Retrieved 2016-08-23.
- ^ "Leading Camera Lab Report: Samsung Galaxy S7 Edge Named New Smartphone Camera Champion - Samsung Newsroom". 2016-03-18. Retrieved 2016-08-23.
- ^ "How Google hopes its Pixel camera will win over iPhone fans". CNET. Retrieved 2016-11-13.
- ^ "8 times Google savagely burned Apple during the Pixel announcement". Macworld. Retrieved 2016-11-13.
- ^ Bagnell, Juan Carlos (2016-10-04). "Google Pixel: A great DXOMARK score doesn't mean "The best smartphone camera"". Pocketnow. Retrieved 2016-11-13.