I am quite confused. I have just acquired a Sigma SD15 Foveon sensor camera, whose RAW files are tagged X3F. Everywhere I have read on this and other forums there are complaints that with these Sigma Foveon cameras, the processing of the RAW files can only be done through Sigma's proprietary Photo Pro software. However, I have just seemed to successfully open my first X3F files taken with the camera in my Lightroom 4.3, and performed minimal edits on them. Am I mistaken, or has the situation with processing these Sigma RAW files recently changed? Please straighten me out or otherwise enlighten me. Thanks.