Thread:Greenhatdigital/@comment-24781217-20140808033036/@comment-25308946-20140814023310

It's a frame, not a cel. A cel is a clear plastic sheet that animation drawings were drawn on in the old days before computer animation was invented. The cells were layered, with different characters and stuff on different cels, and photographed with a special animation camera. A frame is a still image from an animation or film.