Color differences ACR vs Oly V2

OniMirage wrote:

If you allow CS5 to auto correct by default all preview images will also reflect this auto correction in Bridge. In addition if you have a color profile added in CS5 that is different than the one the monitor is calibrated with this will affect the previews as well.

Edit: To add to that, assuming you have done nothing special to photoshop, your computer or camera raw settings, the default camera raw will have a tone curve pre added, sharpness pre added, brightness and contrast pre added, black level will also be, pre added. All bridge previews will view it this way as well until you open the image is x program and the color profile is saved to the raw images.