FIG. 56.
STAMP PHOTO.

It contains a number of lenses all of the same focus. In front is an easel where the portrait is attached, surrounded by a suitable border. The images given are about the size of postage stamps (see Fig. 56), and when the negative is printed on a printing out or developing paper, toned or developed, they can be perforated and gummed at the back. They are very useful for sticking to letters, envelopes, and for business purposes.