maverick788us - the fcamera application. for the rest, i had issues with the app initially. it would briefly startup then shutdown again. i installed the fcam drivers first and then the fcamera application itself and that solved the problem for me. the dng format files are adobe digital negative format. you can manipulate them with apps on the pc. just do a google search. they are big though - in excess of 10mb. they can come in a pair with one file being a jpeg preview. this is as per the dng specifications.