Photography in the Studio and in the Field / A Practical Manual Designed as a Companion Alike to the Professional and the Amateur Photographer

by Edward M. Estabrooke

DALLMEYER'S RAPID RECTILINEAR LENS

WIDE ANGLE LENSES.

There is another class of lenses of double combination, which are called wide angle lenses. They are constructed to embrace an angle of from 90 to 100 degrees, and are therefore indispensable for use in confined situations, such as narrow streets and interiors. They are also capable of being used with advantage for all the purposes of a view-lens, their only disadvantage being that they are not so rapid as lenses of a lesser angle. For certain subjects the back lens of the combination may be removed and the front lens used in the same manner as an ordinary landscape lens.

THE E. A. WIDE ANGLE-LENS

is of this class, and being of short focus and made on the rectilinear principle, it is a useful lens for all the purposes already enumerated, and for architectural subjects, as well as for copying of maps, drawings, printed matter, etc., etc.

Every amateur should possess one of these lenses, as p161 well as one of the more rapid-acting lenses for instantaneous work, unless he can well afford to get the best.

DALLMEYER'S WIDE-ANGLE RECTILINEAR LENS

will completely fill the bill. This lens consists of two cemented combinations, each composed of a deep meniscus crown and a deep concavo-convex flint glass lens.