Excerpt from The Year-Book of Photography and Photographic News Almanac for 1869: Containing a Complete Calendar for the Year The Rectilinear Stereo' Lens (patent), of 3 in. Equivalent or 2} in. Back focus, is especially constructed for architectural views, Interiors, and Landscapes in confined situations, where longer focus lenses cannot be used. It covers the stereo plate ith the full opening, and with smaller stops, plates up to 5 in. By 4 in. That this lens is of great use for special purposes, is recognized by all the first photographers, most of whom are already using it. Mr. Good, who recently started on his second tour 1n the East, had four of them attached to his stereo-camera, in addition to the single combina tion lenses, with which all his previous views were taken. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.