The plural form photos is an exception to the rule that words which end with -o preceeded by a consonant have -es added to create the plural form.
my awnser is that film makers are film peaple.
Yes - the technique is called steganography, which is the practice of hiding data within image files. However, the process is not practical for hiding multiple messages or images within images - the...
The basic root for photo is simply photo and I'm not to sure how you came to wonder about this but oh well there's your answer!
photograph (a representation of a person or scene in the form of a print or transparent slide; recorded by a camera on light-sensitive material)