Leica R4

Características

  • Producción - 1980-1986
  • Código - 10046-negra - 10041-motorizada cromada - 10043-motorizada negra - 10051-dorada
  • Descripción - "The Leica R4 set the shape and, layout for the next generation of Leica reflex cameras. It is lighter in weight and smaller in overall size than the R3.
  • Categoría: cámara réflex de película
Period;1980 − 1986: 1533351 − 1696450 (total some 78000)
Type; film-cartridge loading 24x36
Finder; built-in pentaprism,
Viewfinder indications: interchangeable ground-glass screen with central split-image rangefinder and micro-prism ring, aperture and shutter speeds, exposure modeExposure modes: manual, shutter and speed priority, program, flash (no TTL flash!)
Exposure meter; built-in TTL exposure meterLight meter: spot (selective, depends on lens used) and average.
Film speed range: DIN 12 − 36, ASA 12 −3200
Meter sensitivity in cd/m^2; 0.25 − 64000 (EV 1 −19)
Shutter speeds;1, 1/2, 1/4, 1/8, 1/15, 1/30, 1/60, 1/125, 1/250, 1/500, 1/1000, B
Shutter control and type; electronically controlled, Seiko MFC-ES
Flash ; X (hot shoe and PC)
Flash synchronization; 1/100
Film transport; manual by lever, rewind folding lever, mechanical, additional motor-winderMeasurements in mm; 138.5 x 89.1 x 60 (official specs 62.2) Weight body (grams); 625

Differences: Model: R4s: exposure modes limited to manual and aperture-priority
Model: R4s-2 (USA R4s-P): same as R4s, but with manual override.
Model: R5: includes TTL flash, shutter speeds 15 sec - 1/2000 (auto); 1/2 − 1/2000 (manual); increased sensitivity to EV 1 −20 (0.25 − 125000 cd/m^2)
Model: R-E: simplified version of R5: no program mode, no shutter speed priority
Model: R6: mechanical shutter 1 −1/000, B; increased sensitivity to EV −1 −20 (0.063 − 125000 cd/m^2); exposure mode: manual only
Model R6.2: shutter speed increased to 1/2000
Model: R7: increased sensitivity to EV 0 −20 (0.125 − 125000 cd/m^2); measurements in mm; 138.5 x 94.8 x 62.2 weight body (grams); 670



El sistema de medición es altamente sofisticado y incorpora cinco modos de medición, todos seleccionados por el uso de una sola línea en la parte superior. El sistema de medición se activa tocando ligeramente el botón de liberación o presionando el programa selector. EL obturador electrónico Leitz/Seiko incorpora velocidades variables entre 1/2 y 1/1000 seg más B. En modos P y A: 8 segundos a 1/1000 continua y desde 1 segundo en los modos T y M. Además hay una velocidad mecánica fija 1/1000 sec. Hay un disparador automático electrónico con una señal LED en la parte frontal de la cámara.

El sistema de visor dispone de pantallas intercambiables. La pantalla del visor de lectura incluye modo seleccionado, medición, velocidad de obturación, apertura, retención de memoria, sobre y subexposición, flash listo y modo manual. Acepta la nueva unidad de motor y acepta la gama objetivos R de 15 a 800 mm. Dispone de un repaldo con registro de datos y uno con capacidad para bobinas largas.

Referencias

Comentarios

Alrededor de 1980, las Nikon F2 y F3 y la Canon F1 habían definido la imagen profesional y las Pentax ME y LX, la Olympus OM-2 y la Canon AE-1 habían capturado la imaginación del mercado aficionado avanzado. La serie de cámaras R que empieza en 1980 con la Leica R4 y acaba con la Leica R7 en 2002 tiene una especial significación.

Si miramos a todos los modelos de Leica Reflex solo hay cuatro formas de cuerpos distintas: the Leicaflex range, the R3, The R4-family and the R8/9 camera. The R4 models are basically the third generation of the Leitz reflex family tree. This family was in the catalogues from 1980 to 2002 and for more than two decades was the backbone of the company. The total number of units manufactured is some 195000 (less than the M3 alone!), which is on average about 8800 units/year. The R4 used the main chassis of the Minolta XD-11 (in Europe XD-7), but could not use newer Minolta bodies, because Minolta switched to autofocus cameras that Leitz did not want to or could not use. The R6 and in particular the R7 have the most Leitz derived parts and show the best Leica DNA. The decades between 1980 and 2000 were a most innovative and even disruptive period in camera design, but Leitz/Leica was struck in the groove of the classical reflex models. The R8 was already on the horizon and the surge in interest for the CRF concept produced a relative neglect of the R4 development. The many variants of the basic R4 camera were created to respond to different impulses from the market, but the R4s, R4s-2, R5, R-E, R7 and R6 and R6.2 are all variations on one single theme. The technicians of the old Popular Photography noted of the R6 that “it lacks any signs of engineering, machining or construction that place it beyond the level attained by other fine cameras”.
The first R4 was inscribed with R4 MOT Electronic, but this was confusing as the camera did not have an integrated motor-winder, only the provision to attach one to the camera body and the designation was changed to R4. The R4 was the quietest reflex camera of its time. The R4 is a multi-mode camera with two light metering modes: selective and average and five exposure modes: manual and automatic flash, program and shutter speed and aperture priority.




Leica R4 y Leica R4s © Mangas

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