If you use Exposure X as a Photoshop or Lightroom plug-in then you don’t need to worry about Raw file support. For plug-ins, Photoshop and Lightroom do all the Raw file reading.
As a stand-alone application, Exposure X can read Raw files and edit them non-destructively. Here is a list of the Camera Raw formats supported in Exposure X. If you’d like to see support for a camera that isn’t listed here, please email firstname.lastname@example.org and tell us about it.