APO-Summicron-R 180 mm f:2,0

Características

Código -11271 - 11354-ROM . LLC - 190
Producción - 1994-2009, 1,700+ objetivos
Variantes:
Montura - LEICA R
Ángulo de visión (diagonal, horizontal, vertical): 13.7°, 11.4°, 7.6°
Diseño Óptico:
Número de lentes/grupos 9/6
Longitud focal efectiva - 179 mm
Posición de la pupila de entrada 294 mm
Intervalo de enfoque: - 1,5 m a infinito
Escalas: en metros y pies
Campo visual mínimo: 160 mm x 240 mm
Factor de reproducción: 1:6,8

Diafragma - f/2.8-f/22 automático con preselección y valores intermedios
Montura de filtros: Series 6 en ranura de filtros, E100
Parasol: : incluído, telescópico, recubierto de goma
Accesorios: Leica APO-EXTENDER-R 2x
Longitud hasta la bayoneta 176 mm
Diámetro máximo - 116 mm
Material: Aluminio anodizado, goma
Peso - aprox.2,500 g
Inscripción APO-SUMMICRON-R 1:2/180
Diseño:

Referencias

Erwin Puts

Some design specifications capture the imagination. The 1.4/50 mm standard lens belongs to this select class of fame. Another design in this class is the 2/180 mm and its variants (1.8/200, 2/200). Designers are allowed to spend more time and cost to produce best-of-class constructions. The Apo-Summicron-R 2/180mm is in the front rank of this elite group. Overall contrast is exceptionally high and exceedingly fine detail is defined with excellent clarity and exceptionally high edge contrast. The lens approaches the ideal of a lens that gives optimum performance at full aperture, does not degrade when stopping down and performs as well at close distance and at infinity and give equal image quality over the whole image area.

The depth of field of the 180mm at 1:2 and 2.5 meter is about 1 cm (10 mm). That’s pretty narrow. It is by the way a new experience to use such a lens with DoF even less than that provided by the Noctilux. The Leica documentation mentions that the 2/180 can be used hand held and used on a monopod.

The 2/180 is obviously a tripod-only lens and performs superbly in its intended application: location and studio photography in a stationary situation. The catwalk is an obvious deployment as is figure photography, in both cases the low light capabilities of this lens can extend the limits of twilight photography for picturesque images.

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