Opening a Canon .CR2 in Photoshop CS6, Camera Raw generates a significant amount of noise or graininess in the image compared with the simultaneously saved .JPG file. This results in the image from the raw file being of reduced quality. I never had this problem using Photoshop CS5.
Is this the result of some setting being turned on? If so, I have been unable to figure out which one. The only other possibility is that there is a severe flaw in the latest version of the Camera Raw plugin.
Can anyone out there shed any light on this?