I suppose you could go on forever with fussing about subfractions of copyright. An unusual plane flies low overhead, or something. I take a photograph and upload it to explain what I saw. The photo is my copyright. But: It happens to include three advertisements on a roadside hoarding, so I must consult the advert design firms that made up those advertisements. The plane has a logo on its side: that logo was designed hy someone and I must consult whoever has its copyright. For the photo I use a videocamera; its sound track picks up a snatch of copyrighted pop music from a portable stereo that some teenager is carrying by at the time. Etc etc ad absurdum et nauseam et ridiculissimum et paranoidissimum. Forget it. Copyright was made for man, not man for copyright.