How to make pictures : easy lessons for the amateur photographer (1882)
Price, Henry Clay · New York : Scovill Manufacturing Co. · leaf 35
-25 DESCRIPTION OF APPARATUS. Figure 7 shows their appearance ; while beneath, as a contrast, are seen the … ures. The following FIG. 7. cut and description will convey some idea of the lens, and the means used for securing instantaneous exposures. The drop adopted for the Rapid Group Lens con- sists of a thin strip of brass, about three times the diameter of the lens in length, and wide enough to prevent…
Photography
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
