Aperture Éditions. Aperture’s limited-edition prints have been made to the highest aesthetic and technical standards by skilled printmakers using the finest materials and methods. This glossary explains many terms that will help new collectors develop an informed and critical eye. A limited edition is one whose size is determined in advance by the publisher and the photographer. As in traditional printmaking processes, the photographs are signed and numbered Artist’s proofs, which are produced in order to ensure the consistent quality of the edition, are not included in the edition size, but are numbered separately.