Below are the addresses of persons working on specific parts of gphoto2. If you have specific questions (like why doesn't my HP C20 answer with 0x20 if I send 0xff as described in whatever/file.c), those are the guys to ask. libgphoto2_port: Scott Fritzinger libgphoto2: Scott Fritzinger camlibs/agfa-cl18: Vince Weaver camlibs/barbie: Scott Fritzinger camlibs/canon: Philippe Marzouk camlibs/digita: Johannes Erdfelt camlibs/dimera: Dan Fandrich camlibs/jamcam: Chris Pinkham camlibs/konica: Lutz Müller camlibs/kodak/dc120: Scott Fritzinger camlibs/kodak/dc240: Hubert Figuiere camlibs/panasonic Mariusz Zynel camlibs/panasonic/coolshot: Chris Pinkham camlibs/polaroid: Nathan Stenzel camlibs/sierra: Scott Fritzinger camlibs/sonydscf55: Raymond Penners Bug reports on sourceforge: Hubert Figuiere kamera (external project): Ilya Konstantinov GnoCam (external project): Lutz Müller