MOONLIGHT PHOTOGRAPHY.—With gel atine dry plates of extreme sensitiveness it is possible to make photographs by moonlight, only a very long exposure is required. Fig. 284 is a good example of moonlight photography. It was made by Mr. F. A. Demuth with a Bausch & Lomb R. R. Lens f8, Seeds 26 x plate, and one hour's exposure from 8.15 to 9.15 on a February MOUNT.—The cardboard or other support to which the photograph is attached. These are of various kinds.
Portrait are usually of enameled cardboard, with plain, beveled, or gilt edges. The quality depends upon the composition of the board, the thickness • (which is usually determined by the number of sheets the card is made up of) and the finish.
Cheap mounts are never to be recommended. The card used often contains impurities that arc fatal to the permanency of the photograph and consequently detrimental to the interests of the photographer. The edges are also finished off with a bronze paste ; often this finds its way to the surface of the mount and produces small white spots in the photographic image. Pure boards finished with real gold leaf should always be employed.
Portrait mounts are usually of various colors. Black, dark green, and olive are very effec tive. White or light colored mounts are more suitable for some subjects, but these soon become dirty in handling, and never bear a nice appearance for any length of time.
The various sizes of portrait mounts are as follows : Stereoscopic.. 31 by 7, 4 by 7, 41 by 7, 44 by 7, 5 by 8 Minette III by 2t Victoria 31 • 5 Card • 41 Imperial 71 • 91 Cabinet 41. • 61 Boudoir 51 • Sf Promenade 41 • 71 Panel 4 • 81 View are of various kinds and should be much larger than the photograph to be mounted. They can be obtained in any size and quality, with and without a border line for
Cut Out have a plain beveled or beveled and gilt opening, behind which the photograph is attached. They are very effective and especially suitable for gelatino chloride prints, as by their use the mountant is only applied to the edges, and so the glossy surface remains unimpaired.
The permanency of pictures mounted in this way is also liable to be greater, as there is no mountant to have a deleterious action as many do.
are produced by pressing a portion of the center of the mount with a metal plate, so that that part has a sunken-in appearance. The plate-sunk portion should be a little larger than the picture to be mounted. Mounts of this description can be purchased ready-made in the standard sizes. If any unusual size is desired, it can be made by cutting a piece of sheet metal to the size required, laying it on the plain cardboard mount and applying to it considerable pressure in an ordinary letter-copying press. • are made by pasting a sheet of paper of a different tint, to the center of the mount. A white mount with a gray paste-down a little larger than the picture, or a gray mount with a white paste-down are very effective for platinotype or matt surface prints.
have a plate-sunk mark in the center, and in this is attached the paste-down, somewhat smaller than the plate mark and larger than the photograph. They combine the beauties of the plate-sunk mount, with the paste-down.
Oxford mounts having a border line round the photograph, finished off at the corners like the Oxford frame, thus—+.