Summilux-M 35 mm f:1,4 ASPH (II)

Características

Código - 11 663-negro - -titanio
Variaciones: Negro, Titanio (con Leica M9-T), Cromado (con Leica M9-P Hermès)
Producción - 2010 -
Bayoneta -Bayoneta Leica M con Códigos 6 bits
Angulo de visión diagonal, horizontal, vertical: - Para 35 mm: 63°, 54°, 38°

Diseño Óptico:
Número de lentes/grupos - 9 / 5, una asférica, con una superficiee asférica
Longtud focal efectiva - 35.6 mm
Posición de la pupila de entrada - 16.6 mm (respecto a la primera superficie de lente en la dirección de la luz)
Intérvalo de enfoque: - 0.7 m a infinito
Escalas: combinada, metros/pies
Campo visual mínimo: 418 × 626 mm (para M8 approx. 313 × 470 mm)
Factor de reproducción máximo: - 1:17.4
Diafragma - f/1.4-f/16 con click, valores intermedios, diafragma manual tipo iris de 9 hojas
Montura de flitros: roscado interno para filtros E-46, elemento frontal no rotatorio.
Parasol: Separado, roscado, incluido en el paquete original.
Accesorios - Parasol: incluido, #12465
Longitud hasta la bayoneta - 46 mm (58 con parasol)
Diámetro máximo - 56 mm
Peso - aprox. 250 g (anodizado) 415 g (Cromado o titanio)

Inscripción - LEICA SUMMILUX-M ASPH. 1:1.4/35 E 46 (Serial No.)
Conocida como FLE (Floating Lens Element)


Referencias

Descripción

The 35mm focal length changed guard with the 50mm lens as the primary lens for Leica M users in the period from 1955 to 1965 when the style of documentary and human-interest photography asked for a close encounter with the subject matter. The Leica M2 camera was specifically introduced to facilitate the use of the 35 mm focal length. This focal length is eminently suited for this visual frame because you can have a format-filling main subject encapsulated by a meaningful environmental statement.

The new Summilux-M 1.4/35 ASPH adds the floating element technique to make complete the basic optical design of the 1989 edition of this very classical and popular lens.

The technology of floating elements where a whole group of lenses moves axially in according to the distance setting was introduced in the M-line with the Summilux 50 ASPH in 2004. Since that year, Leica has upgraded several high-speed wide-angle lenses with the FLE technique, notably the Summicron 75, Summilux 21 and 24 and now the Summilux 35.

The main task of the FLE construct is to compensate for the loss of contrast that is always the case with stationary lens groups that have been optimized for longer distance photography. In addition the small focus shift that was present in the previous design has been eliminated.

The lens has almost the size as the predecessor. Compared to the original Summilux 1.4/35 mm this is a doubling of volume and implies a much higher geometric flux. More light energy through the lens reduces vignetting and effectively increases the illumination reaching the sensor surface, but is also more difficult to handle optically speaking.

The new Summilux-M 1:1/4/35 mm ASPH FLE is definitely a significant improvement over its predecessor, not so much in the basic performance criteria, but in those areas that count in the age of digital capture: the focus shift has been eliminated, the image quality in the close distance range has been improved visibly and last but not least the propensity for flare and secondary reflections has been eliminated.

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