The "New Ansco 35mm Memar" sold in the 1955 Sears Camera Catalog (page 10) for .50. The leather eveready case was an additional .95 and the Ansco Flash (page 40) .95.Sears advertised the Memar as "simplicity and quality at a low cost." It is a simple, well built camera, with sufficient controls to take some serious photos. The lenses are usually small aperture and will provide a clear depth of field from perhaps five feet to infinity. The lens focuses, but the user has to estimate the distance.Rangefinder cameras have at least two windows which produce two images.It has an Agfa Apotar 45mm f3.5 lens, a Pronto shutter with speeds from 1/25 to 1/200 plus B. Focus is set by rotating the focus ring in front with focus from 3 feet to infinity.There is usually a yellow square or diamond seen in the viewfinder with two overlapping images.You rotate the focusing ring until the two images merge together.The cameras are arranged alphabetically by manufacturer and then generally by date for each manufacturer. - Silette has a lengthy discussion of the various designs over the years.
This section contains over 70 still cameras from A to Z (Agfa to Zeiss Ikon) using 35mm film but not having single lens reflex viewing and focusing. The third way is rangefinder focusing which provides precise focusing.
Often there are two, three or four distance zones often represented by icons to help the user.
For further information see The Living Image and Olympus 35mm Rangefinder Cameras.
Rangefinder focusing became common in the 1950s and remained popular until being largely replaced by the fourth focusing method, autofocus which begin with the Konica C35 AF in November 1977.
With autofocus, you just point at the subject and the camera focuses automatically. With all of these cameras the photographer views the image through a viewfinder which is not connected to the lens.The view through this viewfinder or window can hence be slightly different from the image that hits the film.