Σάββατο, 19 Σεπτεμβρίου 2009
The Pentax Super-A, also sold in some markets as the Pentax Super Program was a 35 mm single-lens reflex camera produced by Pentax of Japan in the 1980s. It is not the same camera as the slightly lower-specified "Pentax Program A" (which also had an alternative name, the "Pentax Program Plus".) The camera offers fully automatic exposure mode when coupled with an appropriate Pentax-A series lens. With such a lens the camera also offers shutter-priority mode, and with any compatible lens (i.e. Pentax-M lenses in addition to the Pentax-A series) the camera offers aperture-priority and fully manual modes. The shutter speeds, selected by up/down buttons rather than the conventional wheel, run from 1/2000 of a second to 15 seconds, plus a "bulb" mode. There is flash synchronisation at 1/125 of a second. Unlike the camera's most direct predecessor, the semi-automatic Pentax ME-Super, this model cannot function at 1/125 of a second, or at all, once the batteries have been exhausted. Speed is displayed on an LCD panel on the top of the camera adjacent to the buttons (which also shows whether the camera is cocked), and both speed and aperture are visible on LCD displays inside the viewfinder. These receive natural light through an opaque plastic window on the pentaprism housing and can be electrically lit at the press of a button. Also in the viewfinder, centred, is a split image focus aid surrounded by a microprism ring. A further improvement over the ME Super was the inclusion of a depth-of-field preview lever. The camera also featured a self-timer, which was electronic rather than the manual lever of its predecessors. The available ISO film speed choices were extended too, and run from 6 to 3200 ASA. As with the previous M series cameras, there is a window next to the winder arm which indicated film movement, and assists the user in rewinding film into the cassette without losing the tip of the film. Metering is through the lens. The Super A version was available with a black top-plate (and matching base), the Super Program version was available with a chrome-coloured top-plate (and matching base). The main body, plastic grip, and lenses were always black. The European camera of the year version(1983) had a small round bass plate on the front lefthand side of the body. This all came with a lens cap and strap with the European camera of the year insigna.
K2 Features: Self-timer (5 to 9 sec.) Depth-of-field preview Auto exposure (aperture priority) Exposure compensation (4×, 2×, 1×, ½×, ¼×) Shutter speeds down to 8 seconds, flash sync at 125th/sec Manual Mechanical shutter: 1/125 to 1/1000 sec and B The K-mount: This lensmount was the result of the cooperation between Pentax and Zeiss Ikon from the late 1960s until 1972. Zeiss Ikon however, withdrew from camera production about 1975, while Pentax went on and introduced the K-mount to be a feature of all their subsequent cameras. They made the mount available for other camera manufacturers as well, hoping for a new industry standard. Some manufacturers adopted it, but due to different requirements regarding electrical contacts, no real universal mount has been obtained.
Produced around 1968-1975 VEB Pentacon AG Dresden, Germany Film type 135 (35mm) Picture size 24 x 36mm Lens M42 screw-mount Meyer-Optik Oreston 50mm 1:1.8-16 Filter size 49mm threaded Shutter cloth focal plane Shutter speeds B, 1-1/500 Viewfinder SLR Exposure meter TTL CdS Battery originally PX675 mercury Aperture preview button two PC sync - X, F - but no shoe (?!)
Praktica NOVA II Producer data Producer Kombinat VEB Pentacon Dresden since January 1985 VEB Pentacon DresdenBetrieb des Kombinates Carl Zeiss Jena responsible constructor Rolf Noack production period December 1984 to February 1986 no of produced cameras as a part of Praktica super TL 1000 series (1st variation) 81,699 Technical properties of the camera shutter type mechanically controlled vertical-moving metal-blade focal plane shutter exposure time(possible settings) B, 1/1, 1/2, 1/4, 1/8, 1/15 1/30, 1/60, 1/125, 1/250,1/500, 1/1000 view finder fixed eye-level view finder (Pentaprism) with Fresnel lens with microprism and plain split-image range finder as focusing screen, built-in shutter speed meter with (+/-)-symbol mirror instant-return mirror film transport / frame counter quick-release lever (black), Pentacon Loading-System, fold-out rewind crank (black), auto-zeroing frame counter lens mount M42x1 self timer none battery VARTA V 625 metering system TTL-metering using stopped-down metering controlled by a switch beside the lens mount above the shutter release knob flash system X-synchronisation (1/125), accessory shoe at the top of the pentaprism, no coaxial flash socket at the camera body for dual flash systems flash indication none aperture reflection into view finder none general comments smooth, unruffled leatherette with stampings
Camera Name XG-1 (XG1) Manufacturer Minolta Place of Manufacture Japan Date of Manufacture 1979-84 Focusing System Single lens reflex Lens Mount Minolta MD Mount Shutter Rubberized horizontal focal plane curtain.1 sec - 1/1000 sec + B (X-sync @ 1/60)Self-timer Metering System Through the lens (TTL) aperture priority (AE) meteringCenterweighted averaging meterNon-metered manual mode optionFlash auto-exposure with dedicated flash units Flash External hot-shoe and PC cable connection for X sync flash Film type / speeds Type 135 film (35mm standard) ASA 25 to 1600 Battery type 1 x Eveready S-76 battery
Praktica BC1, first version Producer data Producer VEB Pentacon Dresden Betrieb des Kombinates VEB Carl Zeiss Jena responsible constructor Werner Hahn, Rolf Noack production period April 1984 to 1985 no of produced cameras 91,500 Technical properties of the camera shutter type steplessly working electronically controlled vertical-run metal-blade focal plane shutter exposure time(possible settings) B, steplessly automatic speeds between 40 sec and 1/1000; manually precise speeds of 1/1, 1/2, 1/4, 1/8, 1/15, 1/30, 1/60, 1/125, 1/250,1/500, 1/1000; mechanical range 1/90 sec view finder fixed eye-level view finder (Pentaprism, field of view: 95%) with field lens with triple rangefinder wedge, truncated microprism screen, groundglass field, red LEDs- for shutter speed signaling changes their brightness with brightness of the image mirror instant-return mirror film transport / frame counter single stroke 125° wind-on quick-release lever with 25° stand off position, accepts B-motor winder, folding crank rewind knob, auto-zeroing frame counter lens mount Praktica-B-mount with EDC (electronic diaphragm control) self timer mechanically, approx. 10 sec delay battery VARTA V28 PX (4xLR44) metering system TTL-metering (12 to 3200 ASA) using electronic diaphragm control (EDC) for measurement with open aperture using a Gallium-Arsenide-Phosphide photo-diode, auto exposure compensation with +/- two shutter speeds in half steps, automatic exposure system with memory key, battery check facilities flash system X-synchronization (1/90), accessory shoe at the top of the pentaprism with additional contact for the flash ready signal, additionally coaxial flash socket at the camera body for dual flash systems flash indication yes, green LED aperture reflection into view finder yes general comments first version with first version of exposure-compensation and ASA-setting knob cylindrical rewind knob with metal crank arm
Electronically controlled stepless shutter speeds from 1/1000 to 1 second for automatic modes plus stepped speeds from 1/1000 to 1 second plus “B” in metered manual mode. “X” sync setting for 1/100 sec, plus fully mechanical operation at “O” (1/100 sec) and “B”.Completely electronic automatic aperture control in shutter priority mode.Final check metering system (after stopping the lens down the camera performs a final check to ensure that the exposure will be correct). This was later also used in the Minolta X-700.Very bright acute-matte viewfinder screen with details of selected aperture and shutter speed, so no need to take the eye from the viewfinder, even in metered manual mode.A range of interchangeable screens was available (see here).Vertical traverse metal blade focus plane shutter for quiet operation, and also enabling a fast 1/100 sec flash sync speed. This sync was the fastest of the Minolta Manual focus bodies, and was nearly twice as fast as the later X-700.Silicon photocell TTL centre weighted meter, measuring at full aperture for display then at taking aperture for exposure. Automatic exposure range EV1 to EV18.Can be used without batteries in fully mechanical mode at B for long exposures, or at “O” for 1/100 sec. This feature was included because photographers had traditionally been used to mechanical cameras, and there was still some hesitation at relying on a battery. What it means now is that for extremely long exposures the battery can be removed, resulting in zero current drain. Later models, such as the X-700 had a maximum long exposure time of about 2 hours, due to the fact that battery power was required to keep the mirror up.Remote shutter release that will accept both electronic and manual shutter releases.Unlike later cameras like the X-700, the XD7 uses a full metal body construction.Can be used with the Autowinder D for motor driven sequences of up to 2 frames per second.Exposure adjustment lever for up to two stops over or under exposure from the metered setting.Depth of field preview button.Built-in eyepiece shutter for tripod use (won't mess up your metering).PC connection for studio flash use.Film “safe-load” indicator.Self timer (adjustable from 2 to 10 seconds).