If the picture has not been edited or copied since it was taken you can view the EXIF information, if you search online for exif viewer you can find many programs.
It depends on what equipment they have been recorded on.
ammby
The part has already been taken.
No one else will know but you.
If by that you mean taken naked pictures, yes.
output
No, you need seeds.
There are many tools for such purpose. But, photoshop has been a friend of mine since a long time, you can create/change pictures with any size you want.
output
Ask for it back.
Huh? and you would be "paid" by...? and take pictures of "what" for who? keep thinking, it's a start.
Put markings on the original wires with paint or white-out and take pictures with a digital camera before you remove them.