Originally Posted by
koto
pero sir how about, example *u rent a camera or barrow it from someone with the CF and ayun nag picture picture naka like sa sinulog, then u copy the file to ur pc/mac but forget to reformat the cam, then another person rent or the owner mismo sa cam ang mu angkun sa pictures then he pass it in the sinulog tapos naka daog too, nya mu reklamo either nila kung nga ilaha ni nga pic, in this case unsaun man og prove which is the real owner,... since both of them nai EXIF file.
re: renting the cam - you will/should have a document that you rented the camera on a certain day, and it will most likely show the time period that you rented it [certainly, no one will rent a camera without any proof that it was rented by Mr. X on Y date at Z time]. since the exif of the photo will show that it was taken while you were renting the cam, then that will be proof that you took the picture. also, the the time stamp when you downloaded the photo to your pc/mac would be additional proof.
re: borrowing - still the same with the time stamp when you downloaded the photo to your pc/mac. this would result in the strong assumption that you took the photo, as obviously, both of you could not have downloaded the photo to your respective pcs/macs at the same time.
I don't know about the other brands but Canon allows you to input your name + your copyright notice onto the camera firmware, and this will be included in the exif data. of course, exif data can be altered, but it's better than nothing.