Thanks a lot for your kind words :ashamed: Unfortunately, It isn't neither Helios or Jupiter - I haven't had idea about this thing, or I would look for it! What I got is some "Meteor" from very small video (tape, of course) recorder.
I hope so - interchangeable zoom lens definitely add some awesome value to this project for me It makes whole thing require more work (thus time till release), but if succeed, will bring awesome feat to our belowed device.
Actually, I might need some help from people knowledgeable about camera lenses, like you. You see, I would like to design lens mount point in a way, that would ensure correct flange focal distance. While it is standarized for C-mount, I'm quite sure, that presense of vanilla camera module lens (parameters of it, could be found on camera hardware pages on Maemo's wiki, I think) changes it, but I have no idea (yet) how to calculate this. Could someone do calculations for C-mount with our standard Zeiss (well, licensed) lens present and/or tell me how this calculation is performed (and why like that)?