Decided to create a separate post for this since it was recommended to make it easier to find. Adobe recently release ACR 8.1 Beta which includes support for the new Richoh GR, but LR4 is not able to read this camera profile provided by ACR. This shows an unpleasantly color shift, particularly in the red as seen in this post by Ray. The problem is LR4 is using the embedded color profile of the photo instead of the profile provided by ACR. Quick fix: Extract/Copy "Pentax Ricoh GR Adobe Standard.dcp" from ACR 8.1 Beta or download the file from here Shutdown LR if it's still running, then copy the .dcp file from step1 to Vista\Win7 - "C:\Users\[your username]\AppData\Roaming\Adobe\CameraRaw\CameraProfiles\" or Mac "Macintosh HD/Users/[your username]/Library/Application Support/Adobe/CameraRaw/CameraProfiles/" **Note**: These folders are normally hidden so you have to unhide them. Start Lightroom, change profile to "Adobe Standard" under Camera Calibration in Develop Module for your specific photo and you should now see the correct color appear. Additional detail if your interested in reading. Lightroom and ACR camera profiles are installed in different directories so LR4 can't read ACR camera profiles. When LR4 is installed, by default all camera profiles that are read by LR are installed to Vista\Win7 - C:\Program Files\Adobe\Adobe Photoshop Lightroom 4.3\Resources\CameraProfiles Mac - Macintosh HD/Applications/Adobe Photoshop Lightroom 4.app/Contents/Resources/CameraProfiles/ When ACR is installed, by default all camera profiles that are read by ACR is installed to Vista\Win7 - C:\ProgramData\Adobe\CameraRaw\CameraProfiles\Adobe Standard\ Mac - Macintosh HD/Library/Application Support/Adobe/CameraRaw/CameraProfiles You can also install custom profiles to be read by both Lightroom and ACR. These need to be installed to Vista\Win7 - "C:\Users\[your username]\AppData\Roaming\Adobe\CameraRaw\CameraProfiles\" Mac "Macintosh HD/Users/[your username]/Library/Application Support/Adobe/CameraRaw/CameraProfiles/". So there are a total of 3 folders which contain these camera profiles and so lots of confusion on where to place them so they can be seen. Rule of thumb is, you should install new or custom profiles to the user location, installing them to the program specific default location usually doesn't work and can't be read.