File:The American annual of photography (1922) (14781656255).jpg

Identifier: americanannualof36newy (find matches)
Title: The American annual of photography
Year: 1922 (1920s)
Authors:
Subjects: Photography
Publisher: New York : Tennant and Ward
Contributing Library: Harold B. Lee Library
Digitizing Sponsor: Brigham Young University

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color, for brown and warm black, Lamp Black where a colderblack is desirable, Prussian Blue and Devoes Dark Blue,another show card color for night effects or to modify theblacks. The Prussian Blue is a very strong brilliant color,a powder, and should be used sparingly and very thoroughlymixed, otherwise it has a tendency to streak, also the moistOleo colors made by A. Sartorius, are particularly good. With the above colors it is possible to get a great deal ofvariety, and they are about all you will need unless you wantto experiment and try to produce prints in their naturalcolors. This I do not think desirable as Photography is essen-tially a monochromatic art. In Gum it is not easy to get atrue black. The tendency with all the blacks is toward abrown. This is particularly true with the Ivory black andwith this color you will obtain a very rich effect by leavingthe Bichromate stain in the paper. If you desire to removethis stain it can be very easily done at any time by a bath of 128
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u u o o <O < QH C/3 I oz. of Alum to 20 oz. of water, or better still, a smallquantity of Sodium Bisulphite in water, it is not necessaryto be particular about the amount. I put two or three tea-spoonfuls in a tray with about 60 oz. of water. However,if you use the alum bath before the last printing is made,you will find it has a tendency to shrink the paper. Forapplying the sensitizing mixture to the paper you should havea flat bristle brush about two inches wide, preferably set inrubber, though this is not necessary if you are careful,inwashing the brush after using, the bristles should be softand fine but springy. A camels hair brush is not good at allas it is too soft. This brush you will use in coating thepaper, and you should also have what is called a Flat BadgerBlender to smooth the coating and prevent brush marks andinequalities. The coating should be done with a moderatelyfull brush going over the paper first one way and then across.The Blender is used holding it verti

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