Abstract: A lens shutter type of camera is disclosed in which a zoom lens is positioned in a lens block (1) which has a sector gear (15) rotatably associated with the lens block and with a rotatable cam ring (14). The cam ring and sector gear are rotatable in a substantially constant axial position. A movable finder optical assembly (8) and a movable strobe assembly (9) are movable in association with movement of the zoom lens. The zoom lens is movable between an extreme telephoto position and an extreme wide angle position, as well as into a fully collapsed lens position beyond the extreme wide angle position and a macro or close-up photographing position beyond the extreme telephoto position. When the camera is in its macro mode, a prism (P1) is inserted into the finder optical assembly to correct for parallax; the strobe assembly is moved to change its illumination angle; and an optical wedge (4e) is pivoted into the path between a light receiver (4) and a light emitter (3e).

Abstract: A lens shutter type of camera is disclosed in which a zoom lens is positioned in a lens block (1) which has a sector gear (15) rotatably associated with the lens block and with a rotatable cam ring (14). The cam ring and sector gear are rotatable in a substantially constant axial position. A movable finder optical assembly (8) and a movable strobe assembly (9) are movable in association with movement of the zoom lens. The zoom lens is movable between an extreme telephoto position and an extreme wide angle position, as well a into a fully collapsed lens position beyond the extreme wide angle position and a macro or close-up photographing position beyond the extreme telephoto position. When the camera is in its macro mode, a prism (P1) is inserted into the finder optical assembly to correct for parallax; the strobe assembly is moved to change its illumination angle; and an optical wedge (4e) is pivoted into the path between a light receiver (4) and a light emitter (3e).

Abstract: A lens shutter type of camera is disclosed in which a zoom lens is positioned in a lens block (1) which has a sector gear (15) rotatably associated with the lens block and with a rotatable cam ring (14). The cam ring and sector gear are rotatable in a substantially constant axial position. A movable finder optical assembly (8) and a movable strobe assembly (9) are movable in association with movement of the zoom lens. The zoom lens is movable between an extreme telephoto position and an extreme wide angle position, as well as into a fully collapsed lens position beyond the extreme wide angle position and a macro or closeup photographing position beyond the extreme telephoto position. When the camera is in its macro mode, a prism (P1) is inserted into the finder optical assembly to correct for parallax; the strobe assembly is moved to change its illumination angle; and an optical wedge (4e) is pivoted into the path between a light receiver (4) and a light emitter (3e).

Abstract: A photographic macro lens system can be composed of, in order from the object side, a first group of a retrofocus type and a second group with a floating mechanism being provided between the two groups. The first group has, in order from the object side, a negative meniscus lens having a convex surface directed toward the object, a positive lens having a surface of large curvature directed toward the object, a negative meniscus lens having a convex surface directed toward the object, a negative lens having a surface of large curvature directed toward the object across an aerial distance having a diaphragm stop, a positive lens having a surface of large curvature directed toward the image, and a positive lens. The second group has, in order from the object side, a negative lens element and a positive lens element. The macro lens system is compact and compensates for aberration over a wide shooting range from infinity to a life-size shot and can still be operated in a mechanically stable manner.

Abstract: A compact zoom lens system having a short overall length at the wide-angle position and which provides effective compensation for various aberrations. The lens system is composed of three lens units, and the overall length of the system is changed during zooming due to nonlinear movement of each lens units. From the object side, the first lens unit has a positive refractive power, the second lens unit negative refractive power, and the third lens unit a positive refractive power.

Abstract: A telephoto zoom lens system comprises eleven lens elements including a fourth lens group (relay lens system) of a three-group three-element arrangement. The telephoto zoom lens system covers a range of from quasi-telephoto setting to telephoto setting, has a zoom ratio ranging from about 2.5 to 3, and an F number ranging from 4 to 4.5.