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The focus itself may be adjusted in a variety of ways. Larger view cameras and the like slide the lens closer or further from the film plane on rails; on smaller cameras, a focus ring on the lens is often rotated to move the lens elements by means of a helical screw. Other systems include levers on the lens or on the camera body.
The manual zoom ring allows a smooth progression from 35–420 mm equivalent and silent zooms when recording movies. The camera also includes an "extended optical zoom" system providing greater optical zoom ability when shooting at lower resolutions, giving up to 19.3× optical zoom at 3 MP. Apertures from f/2.8 to f/11 are supported, though ...
It also had a 3.5-inch LCD screen, a color viewfinder, a 12x optical zoom, a 48x digital zoom, and a manual focus ring. The camcorder included a FireWire port for transferring video to a computer. At the time, Sony had a pattern of releasing "professional" upgraded versions of their most popular consumer cameras, with the same chassis shape but ...
The camera uses a 2048 x 1536 pixel sensor and has a fixed 7x optical zoom lens. [4] In designing the Dimage 5 and 7 Minolta have aimed to create SLR-type handling characteristics. The electronic viewfinder, manual zoom, and manual focus ring make the whole user experience more akin to an SLR.
It uses a ring USM, and as several early professional USM lenses, manual focus is performed with a "focus by wire" arrangement. The manual focus ring is a digital input that directs the lens computer to adjust focus using the autofocus motor. This was done to allow full-time manual focus with the relatively new ultrasonic motors.
The camera has many SLR-like handling features — dual control wheels for aperture and shutter speed, manual focus (focus-by-wire), zoom rings and a flash hot shoe. It is among the largest non-SLR cameras, and is positioned at the high end of the bridge-camera market. Zooming while recording movies is supported since the zoom is manual.
Focus mode switch: This switch is found on most EF lenses that have an autofocus feature. It is used for setting the lens to either autofocus mode, or manual focus. When set to autofocus mode (AF), the lens will autofocus when directed to by the camera. When set to manual focus (MF), the lens is focused using the Focusing ring. Some lenses ...
However, the newest SMC-Pentax FA J (1997) and SMC-Pentax DA (2004) types, lacking an aperture control ring, have severely restricted functionality. There were over thirty contemporary manual focus Asahi Optical made lenses of the SMC Pentax-M and SMC Pentax-A types. The ME F had its autofocus sensor inside the bottom of the mirror box.