Lightroom produces a image look based on camera profiles created by Adobe. Use the Camera Calibration pane to customize these profiles to your own look. You can save these settings as a Lightroom preset and apply them at any time, or have them applied automatically on a camera-by-camera basis.
You can use any image to calibrate, but an image containing a color chart, shot under controlled lighting, will produce more predictable results. Figure 6-33
The Calibrate Process
In the Develop module, with the Camera Calibration pane open, select a photo and select a Profile set from the pop-up menu. Figure 6-34 ACR (which stands for Adobe Camera Raw, Photoshop's RAW converter, which also uses the same profiles as Lightroom) versions will appear.
ACR 3.0 or higher are the new and improved camera profiles. Often ACR 2.4 is listed, which means your camera didn't require the updated ACR profile. ...