بولارويد ( spectra ) قفزة جديدة في عالم التصوير .. مجلة فن التصوير اللبنانية _ ع٤٣

Polaroid (SPECTRA) is a new leap in the world of photography

Polaroid Corporation has unveiled a new photographic device with amateurs that produces instant rectangular images that rival the color quality of 35mm photography. This new Polaroid Sectra device includes a lightweight camera with an advanced electronic circuit that makes more than thirty complex focus and exposure resolutions within 50-thousandths of a second, and a self-defining film that blends two separate color chemicals for unprecedented two-tone frequency and color fidelity. From accessories to a photographic creativity that enters new fields and a new service for a print reproduced by laser.

"This new system is eloquent testimony to our pursuit of a new standard for quality," said Mr. O'Neill, a senior Polaroid official. Its role is a technological strength, as it is a standard required and supported by the photographic market, and studies have included the market in length and breadth about what the consumer prefers and what he provides of observations.... This is the design on which the Sectra device was based, which was greatly influenced by consumer comments.

Spectra camera:
While closed, the Polaroid Spectra system camera has a modern and exciting profile. Its sensible wedge-shaped design is accentuated by a dark metallic gray sheet and a complementary, non-slip cover that provides reliable grip for the camera with a grip and binocular.

There is a suitable latch that automatically raises the camera assembly to take the picture and operates the complex electronic network in the device until the programmed implicit flash starts charging in less than 1.2 seconds.
The camera's decision-making electronics or advanced optics make it a precise photographic device confined in a compact structure suitable for carrying either by the hand or with a detachable neck strap.

Then, with a touch of the camera's two-stage shutter release button, the Spectra automatically accomplishes what is required of it.

Features and technical specifications:

Appearance-wise, the camera is a compact, polished introverted machine with a sturdy, polycarbonate exterior. Its deep metallic gray color resists wear and its surface makes for a reliable grip on the back and base of the camera. While closed, the outer enclosure protects the camera's optics, acoustic return transducer, photocell binoculars, and strobe.

Weight: 28 ounces - 744 grams - without packing film. A three-element variable focus device that includes a fixed-focus f/10 aspherical interface lens and Quintic ten-zone optics.

The Quintek device consists of a fixed lens and a sideways rotating element with ten overlapping focusing orbits. The focus range is from two feet - 60 cm - to infinity, and the effective focal length is 125 mm.

Shutter It is a searchlight shutter device with three blades that is electronically adjusted. In the available light mode, the apertures range from f/8 and 41 to f/10 in each of the ten focus orbits. As for the apertures in the macro flash mode, their range is from f/10 at a maximum distance of 15 feet to f/31.5 at two feet, and shutter speeds range between 1/245 second to 2.8 seconds, provided that there is an automatic shutter speed and an automatic selection of the best aperture.
The shutter release button moves in two stages: the first stage operates the strobe charging process, automatic focus with acoustic feedback and electronic controls: while the second stage opens the lens aperture and displays the film by light, the film does not appear until after the bag is on the shutter release button.

- photographic cell:
Silicon photographic diodes fused right into a single, plastic unit illuminate the detection of visible and infrared radiation transmitted through separate black and green lenses: the green ones transmit visible light and the black ones transmit infrared light, and there are electronic circuits that mix the brightness information of the scene with measures of the distance of the subject from Scene luster transducer with subject distance measures from an acoustic feedback transducer to software-powered natural strobe light modifiers.

The photographic diode device yields approximately 12 percent of the image area with an acceptance angle of 20 degrees horizontally and 10 degrees vertically. This, and the visible optical photographic cell is concentrated slightly below the center of the image area to avoid false readings outside due to the brightness of the sky.

An erect, collapsible, telescopic information viewfinder that contains six microplastic lenses with five aspherical surfaces, four reflective mirrors, pentagonal prismatic lenses for displaying information, and a lined eye socket. It gives bright pictures with a magnification of 0.5, free from optical aberrations that result from changing the position of the eye. It also includes LED displays for subject distance, camera status, exposure indicators, and a warning about image fall out of film.

Focusing: Accurate ultrasonic echo field system for automatic lens focus and exposure adjustment There is a transmitter that emits high frequency signals lasting one thousandth of a second and a time return echo to determine the distance between the camera and the subject.

In terms of additional features, we mention the multi-featured control panel, which is subject to user tests. It includes the following:
Distance display in feet and meters, audible key switch, 12-second self-timer, acoustic feedback auto focus override, programmed flash override, open/dim exposure adjuster - 2/3 stops in either direction - remote control, fast strobe recharge With light signals for readiness, and an exposure counter - falling from ten to zero -. There is an LED indicator for the timer, hand straps and a tripod stand.

Film: An integrated, high-speed color print film, equivalent to a speed of 29/600 aza, and the image appears a few seconds after exposure by means of a diffusion transfer dyeing chemistry.
The acidification temperature ranges between 55 and 95 degrees Fahrenheit - 13 to 35 degrees Celsius.
The light contrast in the film has been improved to the best possible for short-term strobe exposures. The boxes come with ten exposure pens, and each one contains a high-capacity 6-volt (Polaroid Polapulse) battery that provides power for all camera functions. The scale of the print is
10.1 x 10.3 cm, the area of ​​a rectangular image is 9.1 x 7.3 cm.

Optional accessories:
A wireless radio remote control that operates the camera from distances up to 40 feet - 12 meters - ; a three-legged table backrest; and special effects packaging, includes filter bag and holder, five special effects filters, starburst, and padded carrying case for camera and film
And accessories, different display devices for the edition and devices for saving the edition ⏹