Identifier: americanannualof28newy (find matches)
Title: The American annual of photography
Year: 1914 (1910s)
Authors:
Subjects: Photography
Publisher: New York : Tennant and Ward
Contributing Library: Harold B. Lee Library
Digitizing Sponsor: Brigham Young University

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Text Appearing Before Image:
Lantern slide making — that is perfect lantern slides — is
made up of a series of manipulations, each in turn must have
absolute care in every detail—none of which are difficult to
even the ordinary worker, but which must be considered to
obtain perfect results. In lantern slide making one must first
and all the time give the greatest attention to detail. The
least flaw in the negative will be duplicated in the lantern
slide, which in turn will magnify it when thrown on the screen.
The perfect slide must be free from every physical defect, and
it does require some care even in the mounting to prevent another
wise perfect slide from being greatly marred through
nothing else but carelessness. Dust, finger marks, small hairs
or fibres, &c., must be carefully removed before the absolutely
clean cover glass is placed in position. In fact, the strictest
attention to minute details and unlimited patience must be
employed if one wishes to produce perfect slides.
It is a good plan to judge your slides in the lantern before
mounting as sometimes a slide which looks well by transmitted

84
Text Appearing After Image:

PORTRAIT OF T. M. JENKINS.
Marie E. Jenkins Allen.

light, when thrown on the screen seems rather disappointing.
For neutral black tones no developer equals the ferrous
oxalate. The iron developer will also produce a slide freer
from fog than any other. The density of a slide may vary
according to the quality of light used in the lantern. Very
often a slide may be greatly improved by either reduction or
intensification. The better slides are made by the copying
process, but very good slides can be made by contact. When
the latter method is used, and if the negative is a hard one,
during exposure hold close to strong light and give full ex-
posure. For a flat weak negative use a weak light and incline
to under-exposure, and develop fully in a full strength de-
veloper, and give a slight reduction with Farmer's reducer.
For the best result you will find that a slow working plate
is best—more latitude and freer from fog.

Developing Lantern Slides by Ferrous Oxalate.

Formula. A. Solution Sulphuric acid . . . . . . . . 30 mims.

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