Kodak 14 in. f 6.3 Eastman Ektar in Ilex No.5 Universal Shutter EY137K

Description

Large beautiful 14 inch Ektar in a number 5 shutter speeds T B 50 , 25, 10, 5, 2, 1 all working
Eastman Ektar f/6.3, 8½-inch, 10-inch, 12-inch, and 14-inch
, all 4-element Tessar type lenses, were designed especially for commercial color photography with 8×10 and 5×7 studio and view cameras. This lens is corrected to a very high degree and is especially well corrected for transverse chromatic aberration or lateral color; it is therefore ideally suited to Kodachrome and black- and-white photography. Each lens was tested for exact register of the images of the three primary colors. The lens was set up so that the light from the test object passes through the lens obliquely. The rectangles were made of colored gelatin, each passing a narrow band of the spectrum. If the lens had been properly made and assembled, the narrow black lines through the rectangles on the test object would be continuous in the test exposure. A test negative was made for each of these lenses, and kept on file. These lenses were marketed in later years as
Commercial Ektars
.