Soviet 135mm f/2.8 telephoto lens by KMZ (1958–1992) with distinctive swirly bokeh from its 15-blade iris; based on Zeiss Sonnar design.
Technical Details
The optical design follows the 4/3 Sonnar scheme with a minimum focusing distance of 1.5 meters and a 58mm filter thread. The lens weighs 580 grams with a length of 106mm and features a 15-blade iris, responsible for its characteristic bokeh quality. Three main variants exist: the early "zebra" version with black and silver stripes, the black version from the 1970s, and the rare Pentax-K mount version. Coating was initially single, later multi-layered, significantly improving contrast and color rendition.
History & Development
KMZ introduced the Tair-11 in 1958 as a Soviet adaptation of the Zeiss Sonnar 135mm f/4, increasing the aperture to f/2.8. Production was initially for in-house Zenit cameras in M39 and later M42 mounts. In 1975, the optical formula was revised, and multi-layer coating was introduced. Production ended in 1992 with the collapse of the Soviet Union, with over 200,000 units manufactured.
Practical Use in Film
The Tair-11 was used in Eastern European productions from the 1960s to the 1980s due to its low cost. Modern cinematographers appreciate it for narrative scenes that deliberately require a soft, dreamlike visual aesthetic – its distinctive swirly bokeh enhances emotional moments and flashbacks. At wide apertures, strong chromatic aberrations occur, which can be used as a stylistic device. Manual focusing requires precise follow-focus equipment but rewards with an organic, analog feel.
Comparison & Alternatives
Compared to modern 135mm lenses, the Tair-11 exhibits significantly less sharpness and contrast but excels with its characterful rendering. The related Jupiter-37A offers similar characteristics at 135mm f/3.5, but with a less pronounced bokeh effect. The Helios-40-2 (85mm f/1.5) produces comparable swirly bokeh at a shorter focal length. For professional productions, Canon CN-E or Zeiss CP.3 offer technically superior but characterless alternatives without the specific vintage aesthetic of Soviet optics.