Abstract: A photometer having asymmetrical apertures and with compensation for direction of incidence includes a photodetector, a mask having asymmetrical apertures and arranged before the photodetector and a compensation prism arranged either before or after the mask. The photometer is adapted to compensate for the difference in quantity of light incident on the photodetector caused by the mask depending on the difference in the direction of incidence of the light.

Abstract: An automatic exposure camera and an autostrobo incorporated camera are disclosed. An automatic exposure camera comprises an ASA area plate rotatably supported on a camera lens housing and provided with a number of through-holes which successively vary an opening area, a light receiving element positioned opposite the through-holes and rotatably arranged at the back portion of the area plate, and an ASA ring being rotatably in accordance with an ASA sensitivity of a film and to position corresponding the light receiving element with the through-hole at a predetermined opening area, the area plate being made rotatable in accordance with a predetermined iris setting or a shutter setting as provided by the light receiving element.

Abstract: A focus correcting device for use in a rangefinder camera is operable to correct for a displacement of the focal point of an imaging optics which results from a change in the diaphragm aperture of an apertured diaphragm. An interlocking mechanism operationally couples a rangefinder with a focus adjusting mechanism of the imaging optics. Means is disposed in the interlocking mechanism or the focus adjusting mechanism to correct for a displacement of the focal point as the particular diaphragm aperture is established.

Abstract: A suspension strap fastener for camera including a rear lid which is pivotally mounted on a camera body by means of a hinge comprising a core shank and a pair of hinge plates, is mounted on a portion of the shank which is not engaged by the hinge plates. The fastener is also formed with a connection with a suspension strap.

Abstract: A protective cover for taking lens of camera comprises a thin sheet which is bent to cover the front, the top and a top portion of the rear of a camera body and is mounted on the camera body so as to be slidable lengthwise thereof between a first position which it covers a taking lens and a second position in which it exposes the lens.

Abstract: In a camera including a taking lens which is moved in the direction of its optical axis in response to an adjustment of a distance adjusting member and also including a lens protecting cover which is movable between a first position in which it covers the front of the taking lens and a second position in which the lens is exposed, a mechanism for retracting the taking lens into the camera by rotating the distance adjusting member comprises a linkage which includes a drive member adapted to be angularly driven by the cover as the latter moves to its first position, and a connecting member which couples the drive member with the distance adjusting member.