Características

Código - 11 813 LLC - 139
Producción - 1968-1994 < 8,850 objetivos (16.000 según Puts)
Fabricante: Schneider-Kreuznach
Variantes: 2-cam, 3-cam
Montura - LEICA R
Ángulo de visión (diagonal, horizontal, vertical): 92°

Diseño Óptico:

Número de lentes/grupos 10/8
Longitud focal efectiva -
Posición de la pupila de entrada

Intervalo de enfoque: - 0.2 m a infinito
Escalas: en metros y pies
Campo visual mínimo: 221 x 148 mm
Factor de reproducción:

Diafragma - f:4-f:22 automático con preselección, 4 hojas

Montura de filtros: Series 8.5 - E72
Parasol: : 12506
Accesorios: Tapa objetivo 14145

Longitud hasta la bayoneta 43.5 mm
Diámetro máximo - 78 mm
Material: Aluminio anodizado.
Peso - aprox. 428 g
Inscripción SUPER-ANGULON-R 1:4/21 LEITZ WETZLAR 2XXXXXX
Diseño: Walter Woeltche 22 Oct 1996 Schneider-Kreuznach

Referencias

Marco Cavina

In 1968 Schneider created a retro-focus design that could be used on the Leicaflex without locking the mirror. Already in 1950 the French company Angénieux developed the retro-focus concept (in fact a reverse telephoto design: a positive component followed by a negative component) specifically to get a back focal length that is longer than the effective focal length. The departure from the symmetrical design introduced a number of aberrations that were difficult to correct and compromises had to be sought. The Schneider design did provide respectable performance and proved to be quite popular in the beginning, especially with architecture and landscape photographers. The competition of the Leitz-designed 19mm lens that was available since 1975 must have reduced the sales possibilities. The last batch was allocated in 1983, but the lens stayed in the catalogues till 1992. Total amount of allocated units is about 16000.