Summicron-M 28 mm f:2,0 ASPH

Características

Código - 11 604-negro 11 661-plateado LLC - 147
Producción - 2000-2016 < 5,500 ejemplares hasta 2006
Variantes - Aluminio anodizado, plateada con inscripciones en blanco (con la White M8), MEISTERSTÜCK (con la Meister Camera M9-P)
Montura -Bayoneta Leica M con Códigos 6 bits
Angulo de visión diagonal, horizontal, vertical: 75°, 65°, 46° (24x36 - 35 mm) - 60°, 51°, 36° (18x27 mm)

Diseño Óptico:

Número de lentes/grupos - 9/6
Longitud focal efectiva - 28,5 mm
Posición de la pupila de entrada - 12,8 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: 35 mm: 528 mm x 793 mm
Factor de reproducción: 1:22
Diafragma - f/2.0-f/16 con click, valores intermedios, diafragma manual tipo iris de 10 hojas
Montura de filtros: rosca hembra interna E46
Parasol: clip, incluido
Accesorios: Parasol: #12451, tapa #14013, opcionalmente: #12466, #12589

Longitud hasta la bayoneta - 40.8 mm
Diámetro máximo - 53 mm
Material: Alumino
Peso - aprox. 270 g

Inscripción - LEICA SUMMICRON-M ASPH. 1:2/28 E46 3XXXXXX
Diseño:

Referencias

• Erwin Puts
  
• Ken Rockwell
  
• Tim Ashley (sobre la Leica M #240)
  

Descripción

The Summicron-M 2/28 mm ASPH. is one of the crown jewels in the Leica scuderia of lenses. It is a superb lens and after twelve years in production still not surpassed. Leica designers, creating lenses for the M-system have to face two rather conflicting demands: the physical size of the lens should be small and the image quality must be the of highest attainable level. The Summicron-M 28 mm is the brain child of one of the younger designers in the Leica optical department, proving that creativity is the main source of inspiration for the current team of ambitious and gifted lens designers. The optical construction with one moulded glass (blank pressed) aspherical surface (the front surface of the last element) applies the same technique that was first introduced with the Summilux-M 1:1.4 ASPH. Already at full aperture this lens delivers high contrast imagery with crisp definition of exceedingly fine detail over most of the image field. Flare is very well suppressed. A lens shade is needed when the light sources may shine in or close to the front lens. Leica has redesigned the front part of the lens where the lens hood is attached, for easier handling. It is a tribute to the design team that they have given this topic additional attention.

The overall performance of the lens is such that we may be witnessing a new paradigm for the Summicron-class of lenses. For some time Leica has followed a two-pronged strategy in the range of of wide-angle lenses: new Summilux (1:1.4) designs and new Elmar (1:3.4 and 1:3.8) designs.