File:The American annual of photography (1917) (14597422048).jpg

Identifier: americanannualof1917newy (find matches)
Title: The American annual of photography
Year: 1917 (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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ated plate as having more latitude) it will be necessary tobuy some imported brand as they are not made in this country,or else do the backing oneself. It is my practice to use doublecoated plates for all outdoor work and for night scenes, if Ihave time. I back the plates with the following mixture: Glycerine i oz. Wood alcohol 6 oz. Lampblack enough to make a thin paste. This is appliedwith a brush and it dries quickly, especially if there is a firein the house. Double-coated plates are often sufficient but sometimes astrong light will burn through both layers of emulsion andproduce halation. If lampblack is used the small amount oflight that gets through to the back will be absorbed. I trust I have convinced a few that the mystery rendering,angle softening soft focus lens is well adapted to night workand that we will see some examples in future issues of theAnnual. As an illustration of what lampblack will do I refer to Fig-ures I and 2. Figure i was taken at 10:30 P. M. The ex- 210
Text Appearing After Image:
Figure 2. Illustrating article Night Photography With the Soft Focus Lens, by Dr. W. G. Adams. 211 posure at F/5 was five minutes and the double-coated platewas backed. It will be noticed that there is no halation around the streetlamps and they were very brilliant. Figure 2 was taken thesame night. The exposure at F/6 was six minutes, and thedouble-coated plate was not backed. Two lamps show con-siderable halation.

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