The sign for "picture" in ASL moves a "C" handshape from near your cheek to
the palm of the non-dominant hand.
Memory aid: Think of taking an image from the eye and placing it on film.
This concept becomes even more obvious when you take a look at the older
version of the sign:
PICTURE (older version)
Here is a verb form of "picture." TAKE A PICTURE:
Use a single click of the shutter, (down and up).
Note: "take-PICTURE" + PERSON = photographer
CAMERA (noun form)
Use a double click: