Características

Código - #11 861
Idéntico en el diseño óptico a Leica Tele-Elmar 135 mm f:4,0
Producción - 1985-1998 (2.700 objetivos)
Bayoneta - Bayoneta Leica M
Ángulo de visión (diagonal, horizontal, vertical): - Para 35 mm: 18°, 15°, 10.2°

Diseño Óptico:

Número de lentes/grupos - 5/3
Longtud focal efectiva -
Posición de la pupila de entrada -

Intérvalo de enfoque: - 1,5 m a infinito
Escalas: combinada, metros/pies
Campo visual mínimo: 220 x 330 mm
Factor de reproducción máximo: - 1:9
Diafragma - f/4-f/22 con click, valores intermedios, diafragma manual tipo iris

Montura de flitros: E46 mm
Parasol: Telescópico
Accesorios

Longitud hasta la bayoneta - 107 mm
Diámetro máximo - 56 mm
Material: Aluminio anodizado negro
Peso - aprox. 550g
Inscripción -TELE-ELMAR-M 1:4/135 LEITZ WETZLAR 3XXXXXX
Diseño - Walter Mandler

Referencias

• La Vida Leica
  
• Marco Cavina
  
• Apo-Telyt.com
  
• Aswin Rao en Stevehuffphoto
  

For a long period this tele-lens was the reference for 135 mm lenses. The Tele-Elmar-M is optically unchanged since 1965 and has been given several facelifts.

The optical performance is, even considering today’s high standards, outstanding. In the 1960s and 1970s this focal length was very popular and photographic companies considered a high-quality lens of these specifications as a litmus test for optical prowess, especially since one had to calculate without apo-chromatic corrections.

The 135 mm lens was needed when using slide film, because slides could not be selectively enlarged. Therefore the composition and scene selection had to be exact and the critical quality of slide films demanded a high-performance lens.

The best lenses in this period were the NIkkor 3.5/135 mm (a medium-contrast-high-resolution design) and the Zeiss Sonnar 1:4/135mm, which had set the Olympian record for a lens of this specification. The Sonnar design has been universally adopted for this focal length-speed combination and the Leica version followed the same design layout.

Improvements are difficult to realize because most designs are very similar. The Leitz optical department however could squeeze the optimum performance from this design to produce a high-contrast-high-definition lens that could match the best of the class. The first series sold very well with 24000 units and the second version was manufactured about 5000 units