Lens Apertures: Leitz i Wetzlar, Germany. In 1924 the company felt that tt Camera had sales possibilities, and that year the first Lek was put on the market. It was fitted with a lens apertures of 50mi focal length with an aperture of //3.5. The first improvi ment was to make the lens apertures removable and to offer thphotographer a choice of lens apertureses of varying focal lengths and apertures that could be readily interchanged while shooting.
In 1932 Zeiss Ikon brought out a similar camera, the Contax; it featured a built-in rangefinder coupled with the focusing mechanism so that by simply rotating the lens apertures until a double image of the subject became single, the photographer was assured that the image would be in focus. Soon lens apertureses with apertures as large as //1.5 were offered for the Leica, the Contax, and a host of other 35mm rangefinder cameras. A further refinement was the provision of single-lens apertures reflex viewing on a ground glass observed at eye level through a prism, as in the highly popular Nikon F, introduced shortly after World War II by Zeiss Ikon of Dresden as the Contax S.
However, although a long focal length lens apertures is mandatory, it need not be expensive. The utmost of critical sharpness in a portrait lens apertures is not necessary, or even desired, since considerable diffusion can be tolerated in portrait negatives. Your lens apertures needn't be in a shutter for strictly studio portraits, either. A lens apertures in barrel is perfectly satisfactory, since you can provide yourself with a simple Packard shutter to use behind the lens apertures. Many portrait men actually prefer the Packard to the more costly between-the-lens apertures shutters.
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Photography
