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Slower shutter speeds (typically from 1 ⁄ 10 to 1 ⁄ 50 of a second) were initially used on cameras to ensure proper synchronization and to make use of all the bulb's light output. Cameras with flash sync triggered the flashbulb a fraction of a second before opening the shutter to allow it to reach full brightness, allowing faster shutter ...
On others, including many Digital SLR cameras, bulb is typically available from the manual exposure mode and—rarely—also from shutter priority mode. [4] When set to bulb, generally on the "M" or manual setting of the camera, the shutter will stay open as long as the shutter release button (or shutter release cable or remote) remains depressed.
"Raise up the movable plunger and spread the powder also over the bottom of the plunger chamber, under the head of plunger. Insert the electronic squib well into the hole for same, as shown by Fig. 7. Set up the camera and focus upon the object to be photographed. Set the flash outfit a little behind and the right side of the camera.
In electronic digital cameras, the mechanism is usually a programmable electronic timing circuit, which may, in some cameras, take input from a mechanical shutter contact. The flash is connected electrically to the camera either by a cable with a standardized coaxial PC (for Prontor/Compur) 3.5 mm (1/8") connector [ 1 ] (as defined in ISO 519 ...
The Zorki 4, 1956, is a Zorki 3S with self timer added.The Zorki 4K is identical but used an advance lever instead of the old-style wind knob. With over 2 million units produced, the Zorki 4 is the most successful Zorki and has a reputation as one of the best Russian cameras, although the self timer and slow shutter speeds are unreliable.
Less than 5% of the power consumed by a typical incandescent light bulb is converted into visible light, with most of the rest being emitted as invisible infrared radiation. [1] [78] Light bulbs are rated by their luminous efficacy, which is the ratio of the amount of visible light emitted (luminous flux) to the electrical power consumed. [79]
A bayonet mount A bayonet mount before and after insertion Early-19th century socket bayonet Socket of a bayonet. A bayonet mount (mainly as a method of mechanical attachment, such as fitting a lens to a camera using a matching lens mount) or bayonet connector (for electrical use) is a fastening mechanism consisting of a cylindrical male side with one or more radial pegs, and a female receptor ...
The underside of the camera features a film wind knob and film eject knob which causes the interior to slide out and allows access to the film payout and take-up reels for changing the film. The lens is a single-element plastic Dakon lens, with a fixed focal range between 2 meters (6.6 feet) and infinity.