Elmar 90 mm f:4,0 (II)

Características

Código -ILNOO 11 631 - 11 830, más tarde 11 130, LLC - 168
Producción - 1954-1968
Variantes - con o sin gafas; anillo de enfoque facetado (SFK)
Montura -Bayoneta Leica M, Rosca M39, el cabezal óptico se desenrosca para ser usado en Visoflex II y III
Ángulo de visión (diagonal, horizontal, vertical) : 35mm (24 x 36 mm) - 27°, 23°, 15°
Diseño Óptico:
Número de lentes/grupos 4/3
Longitud focal efectiva -
Posición de la pupila de entrada
Intervalo de enfoque: - 1 m a infinito

Escalas: en metros o pies
Campo visual mínimo:220 mm x 330 mm
Factor de reproducción: 1:9

El diseño óptico es idéntico al Elmar 90 mm f:4,0 retráctil

Diafragma - f/4,0-f/32 con click, diafragma manual tipo iris de 12 hojas

Montura de filtros: E39 A42
Parasol: IUFOO 12575,
Accesorios: gafas para enfoque cercano OMIFO - Tapa anterior: 14321 cromo plateado /14285 cromo negro.
Longitud hasta la bayoneta - 94 mm
Diámetro máximo - 53 mm
Material: Aluminio anodizado natural
Peso - aprox.
Inscripción - Ernst Leitz GmbH Wetzlar Elmar f=9cm 1:4 Nr.1XXXXXX

Diseño:

Referencias

Descripción

With a total sales volume of more than 185.000 units this unremarkable lens was one of the bestsellers in Leica lens range. No less than six major versions have been made.

The ‘fat’ version already had the four element, three group construction that was particularly suited for this focal length and aperture. The change from the thick to the slimmer mount came in 1933, and might be produced to give a more unobstructed view with the new Leica camera with integrated rangefinder and lens coupling.

After the war production was resumed around 1946 and from batch with serial number 592.001 to 593.000 the lens surfaces were coated. From 1949 a new version came into production, at first in L39 mount with filter size A36 and from 1954 also in bayonet and filter size E39. The styling of the lens, now in chrome finish and with narrow vulcanite band, allowed a more harmonious match with the camera.

These numerous changes in mount and shape are separate from the optical performance that hardly changed. At maximum aperture the Elmar 4/90 mm is a medium-contrast-good-defintion lens. Stopped down the image quality improves, as usual, and the reproduction of fine detail is crisp with good clarity. This performance was quite good in 1960 and should have been impressive in 1930. This Elmar lens indicates that exotic designs may grasp the attention, but most photographers select the more sedate versions for their hobby. Photography in that time period was rather expensive, purchasing power was low and buying the Elmar lens would not produce the proverbial domestic quarrels. The Leica camera itself was already an expensive luxury!


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Three 90 mm screw mount Leitz Elmar 036 por tango-, en Flickr



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