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.
to work w/ .X3F you really need to use SPP, Iridient Rawdeveloper or SilkyPix... not that SilkyPix did not add support for recent Sigma cameras, Rawdeveloper did recently
as for Adobe their processing of X3F file seems to be date and not updated for many years, so you can try to use it, but it boils down to taste... like w/ Fuji XTrans... you can use LR/ACR, but a lot of people are unhappy