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).
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:
- 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 allows the user to correct perspective and lens distortions.
DxO FilmPack emulates the appearance of various conventional films digitally.
DxO also provides image processing software OEM to camera manufacturers.
Their DxO Analyzer product is used to measure lens distortions and sensor performance.
The Perceptual MegaPixel (P-MPix™) rates the resolution a camera produces when paired to a particular lens. DxO Labs claims that P-MPix is a more accurate and relevant value for photographers to consider when evaluating camera sharpness 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. 
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
DxO mobile rating
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
DxOMark Mobile Video details is same as DxOMark Mobile Photo details, except flash is replaced by stabilisation.
- DxOMark Camera Sensor Ratings (needs Flash)
- "DxO Optics Pro Software". Retrieved June 18, 2013.
- Debbie Grossman; Jonathan Barkey (December 16, 2008). "Editor's Choice 2007: Imaging Software". Popular Photography. Retrieved 4 August 2014.
- Daisuke Wakabayashi, "The Point-and-Shoot Camera Faces Its Existential Moment", Wall Street Journal July 30, 2013 
- Lexy Savvides. "Smartphones outperforming high-end compact cameras". Retrieved February 15, 2014.