Ricoh Auto Half-E 25mm Lens Sn 212754 скачать в хорошем качестве

Ricoh Auto Half-E 25mm Lens Sn 212754

Functionality Video, 1964 Half Frame Ricoh Auto Half E (1964) This slightly updated version of the Auto Half came to be used in a number of interesting ways. It still had the same trusty 25mm (f2.8) fixed-focus lens with four elements in three groups. It still had two shutter speeds. The speed of 1/125 was used for regular photography while 1/30 was used for flash. For normal use, the built-in selenium meter -- same square design around the lens -- automatically controlled the aperture setting. ISO from 25 - 400. For flash use, the f-stop is set manually with a little f-stop dial on the top of the camera. This automatically sets the shutter speed to 1/30. The viewfinder had a special mark to aid in correct exposure settings. It is a dot right in the middle of the viewfinder which is normally yellowish -- meaning "adequate light".