C&P from Adobe
For each camera model it supports, Camera Raw uses color profiles to process raw images. These profiles are produced by photographing color targets under standardized lighting conditions and are
not ICC color profiles.
Camera Raw 5.2 automatically installs two types of profiles that are based on the Digital Negative (DNG) 1.2 specification: Adobe Standard and Camera Matching.
Adobe Standard camera profiles significantly improve color rendering, especially in warm tones such as reds, yellows, and oranges, from earlier Adobe camera profiles.
Camera Matching profiles attempt to match the camera manufacturers color appearance under specific settings. Use Camera Matching profiles if you prefer the color rendering offered by your camera manufacturers software.
Both Adobe Standard and Camera Matching camera profiles are intended to serve as a starting point for further image adjustments. Therefore, use the profiles in conjunction with the color and tone controls in the Basic, Tone Curve, HSL / Grayscale, and other image adjustment tabs.
Note: Adobe Standard and Camera Matching camera profiles require Camera Raw 4.5 or later and do not work with earlier versions of Camera Raw. To download the latest version of Camera Raw and install the profiles, go to
www.adobe.com/go/learn_ps_cameraraw.
I stand corrected.