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Zeiss Sonnar 50mm F/2 - regular Versions and Specs

 

This page contains an overview over all regular versions of the Zeiss Sonnar 5cm f/2 and some of its derivatives. Further below you can find a detailed description with photos of each version.  You can find more on the history or the optical design and relevance of the Sonnar in other posts here. There is also another overview of all regular versions of the Zeiss Sonnar 5cm f/1,5.

Spec Sheet

In the following overview you can find all regular Sonnar 5cm f/2 / 50mm F/2 versions Zeiss has produced.  You can find the full sheet here.

Detailed Description

TOC

[v1b ZJ CR bnA2] 1932 Carl Zeiss Jena Contax black nickel A-shape F/22





  • black and nickel finish with Contax Rangefinder mount
    • name ring: Carl Zeiss Jena Sonnar 1:2 f=5cm Nr
    • filter rim: nickel and black, no filter thread, uses 37mm push on filters
    • grip ring: black rippled, very narrow
    • aperture mark: white dot
    • aperture ring: half nickel and black, top silver (nickel) with black aperture scale, diagonal 16 & 22 line, bottom half with black rippled grip ring, clickless
    • locking plate: red dot
    • mount: nickel
  • aperture markings 2 - 22
  • uncoated optics
  • v1b optical lens calculation

The first Sonnar 5cm F/2 was released by Carl Zeiss Jena in Summer 1932. It was the first 5cm full frame lens by Zeiss and then the brightest 5cm / 50mm full frame lens of the world. It was released a half year before the release of its even brighter brother the Sonnar 5cm F/1,5. Both lenses were created by Ludwig Bertele in Dresden to fit the new Contax camera that was secretly developed by Zeiss Ikon in Dresden.
The design matched the black and nickel look of the new Carl Zeiss Ikon Contax I camera. It featured the new interchangeable lenses Contax Rangefinder bayonet mount.

As a standard CRF lens it used the internal CRF bayonet but has no focus ring or focusing helicoid. It depends on the camera (or adapter) for moving the lens to the right focus distance. Because of this design all CRF Sonnars are very small. Another (minor) advantage was that it allowed the photographer to adjust the focus with the right hand using a small wheel on the Contax camera. You can turn the lens with the left hand to focus it as well. The downside of this design is that the aperture ring rotates when you turn the lens. So it might easily end up out of sight of the photographer while focusing.

The lens uses a circular aperture with 16 curved blades. The aperture ring of the lens is at the middle of the body and uses an exponential scale from f/2 to f/22. This means that the stops on this scale have different distances. The aperture ring is clickless and has no hard stops. This is common for this time and was solved decades later.

The lens has no filter thread. Lenses with filter thread were introduced years later. Zeiss offered the adapter 1314/17 to increase the size of the front to allow usage of 42mm slip on front caps, The small filter rim gives this lens a very distinct shape like a capital A.

The early Sonnar 5cm f/2 lenses are notorious for the soft front glass used at this time. It is prone to easily collect scratches from cleaning. 

This version is rather rare. Probably over 700 copies where made by Zeiss and about 4-5 copies are on sale every year.

[v1b ZJ CR bnX2] 1932 Carl Zeiss Jena Contax black nickel X-shape F/22





  • black and nickel finish with Contax Rangefinder mount
    • name ring: Carl Zeiss Jena Sonnar 1:2 f=5cm Nr
    • filter rim: nickel, no filter thread, uses 42mm push on filters
    • grip ring: black rippled, very thick
    • aperture mark: white dot
    • aperture ring: half nickel and black, top silver (nickel) with black aperture scale, diagonal 16 & 22 line, bottom half with black rippled grip ring, clickless
    • locking plate: red dot
    • mount: nickel
  • aperture markings 2 - 22
  • uncoated optics
  • v1b optical lens calculation
  • extremely rare, only 2 are known
This variation is a mix of the previous [v1b ZJ CR bnA2] and next [v1b ZJ CR bnV6] body design. The filter rim portion looks the same as the later Sonnar but the aperture ring is the same as the previous Sonnar. This mix causes the typical X-shape of this variation. The old aperture ring surrounds the lens compared to the later ones and the lens closes down to f/22 compared to the later Sonnars.

This black and nickel variation of the Sonnar 5cm f/2 is extremely rare. Only 2 copies are known. Copies can be found at the end of production batches of the previous A-shaped Sonnars.

The rareness might be explained by the tendency of Zeiss to continuously improve existing product designs and introduce such improvements immediately. Sometimes improvements where introduced in the middle of a production batch. And sometimes those changes caused that features and designs of previous and new variations got mixed up in transition variations during such a change. It seems that workers in the factory used pre-produced parts up until they run out of them. So when the design changed they started production of the new parts but finished lenses and cameras with the still available old and new produced parts. This is true for the Contax I camera but it is also true for the Sonnar lenses of this time. Drawing lines by production batch or even by overall design is not possible for Zeiss products of this time. 

[v1b ZJ CR bnV6] 1932 Carl Zeiss Jena Contax black nickel V-shape F/16




  • black and nickel finish with Contax Rangefinder mount
    • name ring: Carl Zeiss Jena Sonnar 1:2 f=5cm Nr
    • filter rim: nickel and black with black a groove line in between, no filter thread, uses 42mm push on filters
    • grip ring: black rippled
    • aperture mark: white dot
    • aperture ring: half nickel and black, top silver (nickel) with black aperture scale, diagonal 16 line, bottom half with black rippled grip ring, clickless
    • locking plate: red dot
    • mount: nickel
  • aperture markings 2 - 16
  • uncoated optics
  • v1b optical lens calculation

[v2b ZJ CR bnV6] 1933 Carl Zeiss Jena Contax black nickel V-shape F/16




  • black and nickel finish with Contax Rangefinder mount
    • name ring: Carl Zeiss Jena Sonnar 1:2 f=5cm Nr
    • filter rim: nickel with groove line at 1/3 height, no filter thread, uses 42mm push on filters
    • grip ring: black rippled
    • aperture mark: white dot
    • aperture ring: half nickel and black, top silver (nickel) with black aperture scale, diagonal 16 line, bottom half with black rippled grip ring, clickless
    • locking plate: red dot
    • mount: nickel
  • aperture markings 2 - 16
  • uncoated optics
  • v2b optical lens calculation

[v3b ZJ CR bnV2] 1933 Carl Zeiss Jena Contax black nickel V-shape F/22




  • black and nickel finish with Contax Rangefinder mount
    • name ring: Carl Zeiss Jena Sonnar 1:2 f=5cm Nr
    • filter rim: nickel with groove line below, no filter thread, uses 42mm push on filters
    • grip ring: black rippled
    • aperture mark: white dot
    • aperture ring: half nickel and black, top silver (nickel) with black aperture scale, diagonal 16 & 22 line, bottom half with black rippled grip ring, clickless
    • locking plate: red dot
    • mount: nickel
  • aperture markings 2 - 22
  • uncoated optics
  • v3b optical lens calculation

[v3b ZJ CR bnU] 1934 Carl Zeiss Jena Contax black nickel U-shape F/22




  • black and nickel finish with Contax Rangefinder mount
    • name ring: Carl Zeiss Jena Sonnar 1:2 f=5cm Nr
    • filter rim: black, rippled, with 2 small slots, no filter thread
    • aperture ring: filter rim used as aperture ring, white aperture scale at the inside of the filter rim, clickless
    • aperture mark: white line, at lens name ring
    • grip ring: nickel rippled
    • body: 2 black painted bands below grip ring
    • locking plate: red dot
    • mount: nickel
  • aperture markings 2 - 22
  • uncoated optics
  • v3b optical lens calculation

[v3b ZJ CF c3] 1934 Carl Zeiss Jena Contaflex chrome 13 aperture blades



  • complete chrome finish with Contaflex mount
    • name ring: Carl Zeiss Jena Sonnar 1:2 f=5cm Nr.
    • filter rim: chrome, rippled, with aperture mark
    • aperture mark: small black dot on filter rim
    • aperture ring: small, chrome, black aperture scale, with 2 small finger grips, clickless
    • distance scale: chrome, small black letters, m 1 1,2 1,5 2 3 4 6 10 20, feet 6 8 10 15 30 60 Inf, straight distance lines, very small rippled grip ring
    • fov scale ring: chrome, black scale, 2,8 - 22, diagonal lines, red line distance mark, small red dot mounting mark
    • mount: chrome
  • aperture markings 2 - 22
  • uncoated optics
  • v3b optical lens calculation

[v3b ZJ CR br] 1935 Carl Zeiss Jena Contax black ring nickel F/22




  • nickel and chrome finish with black ring with Contax Rangefinder mount
    • name ring: Carl Zeiss Jena Sonnar 1:2 f=5cm Nr.
    • filter rim: chrome, rippled, 40.5 mm filter thread
    • aperture ring: small, chrome, black aperture scale, with 2 small finger grips, clickless
    • aperture mark: big black dot
    • grip ring: nickel rippled
    • black painted ring / band below grip ring
    • locking plate: small square red rectangle at tip
    • mount: nickel, diagonal cut, Made in Germany / Alemania
  • aperture markings 2 - 22
  • uncoated optics
  • v3b lens calculation

[v3b ZJ CR cO] 1935 Carl Zeiss Jena Contax chrome diagonal F/22




  • complete chrome finish on black ring (v3b ZJ CR br) barrel with Contax Rangefinder mount
    • name ring: Carl Zeiss Jena Sonnar 1:2 f=5cm Nr.
    • filter rim: chrome, rippled, 40.5 mm filter thread
    • aperture ring: small, chrome, black aperture scale, with 2 small finger grips, clickless
    • aperture mark: big black dot
    • grip ring: chrome rippled
    • locking plate: small square red rectangle at tip
    • mount: chrome, diagonal cut, Made in Germany / Alemania
  • aperture markings 2 - 22
  • uncoated optics
  • v3b lens calculation

[v3b ZJ CF c] 1935 Carl Zeiss Jena Contaflex chrome 9 aperture blades


  • complete chrome finish with Contaflex mount
    • name ring: Carl Zeiss Jena Sonnar 1:2 f=5cm Nr.
    • filter rim: chrome, rippled, with aperture mark
    • aperture mark: small black dot on filter rim
    • aperture ring: small, chrome, black aperture scale, with 2 small finger grips, clickless
    • distance scale: chrome, small black letters, m 1 1,2 1,5 2 3 4 6 10 20, feet 6 8 10 15 30 60 Inf, straight distance lines, very small rippled grip ring
    • fov scale ring: chrome, black scale, 2,8 - 22, diagonal lines, red line distance mark, small red dot mounting mark
    • mount: chrome
  • aperture markings 2 - 22
  • uncoated optics
  • v3b optical lens calculation

[v3b ZJ CR cc] 1935 Carl Zeiss Jena Contax chrome collapsible flat head F/22






  • complete chrome finish collapsible barrel with Contax Rangefinder mount
    • name ring: Carl Zeiss Jena Sonnar 1:2 f=5cm Nr., flat
    • filter rim: chrome, rippled, 40.5 mm filter thread
    • aperture ring: small, chrome, black aperture scale, with 2 small finger grips, clickless
    • aperture mark: small black dot at grip ring
    • grip ring: small, chrome, rippled
    • locking plate: red dot
    • mount: chrome, horizontal cut, black painted bottom, collapsible, 2 holding screws
  • aperture markings 2 - 22
  • uncoated optics
  • v3b lens calculation

[v3b ZJ CR ccCF] 1935 Carl Zeiss Jena Contax chrome collapsible high head F/22






  • complete chrome finish collapsible barrel with Contax Rangefinder mount
    • name ring: Carl Zeiss Jena Sonnar 1:2 f=5cm Nr., diagonal
    • filter rim: chrome, rippled, 40.5 mm filter thread
    • aperture ring: small, chrome, black aperture scale, with 2 small finger grips, clickless
    • aperture mark: small black dot at grip ring
    • grip ring: small, chrome, rippled
    • locking plate: red dot
    • mount: chrome, horizontal cut, black painted bottom, collapsible, 2 holding screws
  • aperture markings 2 - 22
  • uncoated optics
  • v3b lens calculation

[v3b ZJ CR ccT] 1936 Carl Zeiss Jena Contax chrome collapsible T F/22






  • complete chrome finish collapsible barrel with Contax Rangefinder mount
    • name ring: Carl Zeiss Jena Sonnar 1:2 f=5cm T Nr. (red T), flat
    • filter rim: chrome, rippled, 40.5 mm filter thread
    • aperture ring: small, chrome, black aperture scale, with 2 small finger grips, clickless
    • aperture mark: small black dot at grip ring
    • grip ring: small, chrome, rippled
    • locking plate: red dot
    • mount: chrome, horizontal cut, black painted bottom, collapsible, 2 holding screws
  • aperture markings 2 - 22
  • single coated optics
  • v3b lens calculation

[v3b ZJ CF cf] 1936 Carl Zeiss Jena Contaflex chrome flat head





  • complete chrome finish with Contaflex mount
    • name ring: Carl Zeiss Jena Sonnar 1:2 f=5cm Nr., flat
    • filter rim: chrome, rippled, with aperture mark
    • aperture mark: small black dot on filter rim
    • aperture ring: small, chrome, black aperture scale, with 2 small finger grips, clickless
    • distance scale: chrome, small black letters, m 1 1,2 1,5 2 3 4 6 10 20, feet 6 8 10 15 30 60 Inf, straight distance lines, very small rippled grip ring
    • fov scale ring: chrome, black scale, 2,8 - 22, diagonal lines, red line distance mark, small red dot mounting mark
    • mount: chrome
  • aperture markings 2 - 22
  • uncoated optics
  • v3b optical lens calculation

[v3b ZJ CR ac] 1939 Carl Zeiss Jena Contax aluminum collapsible flat head F/22






  • aluminum body finish collapsible barrel with Contax Rangefinder mount
    • name ring: Carl Zeiss Jena Sonnar 1:2 f=5cm Nr., flat
    • filter rim: silver, rippled, 40.5 mm filter thread
    • aperture ring: small, silver, black aperture scale on separate, screwed on, ring with 2 small finger grips, clickless
    • aperture mark: small black dot at grip ring
    • grip ring: small, chrome, rippled
    • locking plate: red dot
    • mount: chrome, horizontal cut, black painted bottom, collapsible, 2 holding screws
  • aperture markings 2 - 22
  • uncoated optics
  • v3b lens calculation

[v3b ZJ CR acT T] 1940 Carl Zeiss Jena Contaflex aluminum collapsible transition T F/22






  • aluminum body finish collapsible barrel with Contax Rangefinder mount
    • name ring: Carl Zeiss Jena Sonnar 1:2 f=5cm T Nr. (red T), flat
    • filter rim: silver, rippled, 40.5 mm filter thread
    • aperture ring: small, silver, black aperture scale on separate, screwed on, ring with 2 small finger grips, clickless
    • aperture mark: small black dot at grip ring
    • grip ring: small, chrome, rippled
    • locking plate: red dot
    • mount: chrome, horizontal cut, black painted bottom, collapsible, 2 holding screws
  • aperture markings 2 - 22
  • single coated optics
  • v3b lens calculation

[v3b ZJ CR acT] 1940 Carl Zeiss Jena Contax aluminum collapsible flat head T F/22







  • aluminum body finish collapsible barrel with Contax Rangefinder mount
    • name ring: Carl Zeiss Jena Sonnar 1:2 f=5cm T Nr. (red T), flat
    • filter rim: silver, rippled, 40.5 mm filter thread
    • aperture ring: small, silver, black aperture scale on separate, screwed on, ring with 2 small finger grips, clickless
    • aperture mark: small black dot at grip ring
    • grip ring: small, chrome, rippled
    • locking plate: red dot
    • mount: chrome, horizontal cut, unpainted bottom, collapsible, 2 holding screws
  • aperture markings 2 - 22
  • single coated optics
  • v3b lens calculation

[v3b ZJ SP sT] 1941 Carl Zeiss Jena Super Parvo





  • all silver finish with Parvo mount
    • name ring: Carl Zeiss Jena Sonnar 1:2 f=5cm T Nr. (red T), flat
    • shade: silver, painted black inside and on front
    • aperture ring: silver, painted black, holding pin
    • aperture mark: black line at shade
    • aperture scale: ivory crescent strip with black scale screwed on silver body, 2,3 - 16
    • mount: silver, with big dish-like mounting plate, black ball bearing
  • aperture markings 2,3 - 16
  • single coated optics
  • v3b lens calculation

[v3b ZJ LT ac] 1940 Carl Zeiss Jena LTM aluminum collapsible F/22







  • aluminum body finish collapsible barrel with LTM adapter
    • name ring: Carl Zeiss Jena Sonnar 1:2 f=5cm T Nr. (red T), flat
    • filter rim: silver, rippled, 40.5 mm filter thread
    • aperture ring: small, silver, black aperture scale on separate, screwed on, ring with 2 small finger grips, clickless
    • aperture mark: black arrow over grip ring
    • grip ring: small, chrome, rippled
    • distance scale: chrome, black scale, 1 - 20, small m (sometimes missing), sometimes big M
    • fov scale ring: chrome, black scale, 2 - 22, diagonal lines, red arrow distance mark
    • mount: silver, no rippled grip ring, focus knob, unpainted bottom, collapsible
  • aperture markings 2 - 22
  • single coated optics
  • v3b lens calculation

[V3b ZJ M7 bg] 1945 Carl Zeiss Jena M27 black geared Bakelite F/22





  • black Bakelite / plastic finish collapsible barrel with missing mount / M27 thread
    • name ring: Carl Zeiss Jena Sonnar 1:2 f=5cm T Nr. (red T), flat, contains aperture scale
    • filter rim: missing, no filter thread
    • aperture ring: black large geared ring, white aperture scale at name ring, clickless
    • aperture mark: small white dot at inner lens tube
    • mount: missing, M27 screw, black metallic body
  • aperture markings 2 - 22
  • single coated optics
  • v3b lens calculation

[v3b ZJ CR accT T] 1946 Carl Zeiss Jena Contax aluminum collapsible flat head transition F/22





  • heavy aluminum body finish collapsible barrel with Contax Rangefinder mount
    • name ring: Carl Zeiss Jena Sonnar 1:2 f=5cm T Nr. (red T), flat
    • filter rim: silver, rippled, 40.5 mm filter thread
    • aperture ring: small, silver, black aperture scale on separate, screwed on, ring with 2 small finger grips, chromed, clickless
    • aperture mark: small black dot at grip ring
    • grip ring: small, chrome, rippled
    • locking plate: red dot
    • mount: chrome, horizontal cut, unpainted bottom, collapsible, 1 holding screw
  • aperture markings 2 - 22
  • single coated optics
  • v3b lens calculation

[v3b ZE CR abbb] 1947 Carl Zeiss Jena Contax aluminum black arrow, block pin, black mount




  • aluminum body with Contax Rangefinder mount
    • name ring: Carl Zeiss Jena Sonnar 1:2 f=5cm T Nr. (red T)
    • filter rim: black, rippled, 40.5 mm filter thread
    • aperture ring: big, silver, black aperture scale, long straight lines, diagonal 22 line, very small rippled grip ring, clickless
    • aperture mark: black arrow
    • grip ring: big, silver rippled
    • locking plate: small block, red painted top side
    • mount: black
  • aperture markings 2 - 22
  • single coated optics
  • v3b optical lens calculation

[v3b ZE CR arrs] 1947 Carl Zeiss Jena Contax aluminum red arrow, red dot pin, silver mount




  • chrome plated brass body, chrome finish with Contax Rangefinder mount
    • name ring: Carl Zeiss Jena Sonnar 1:2 f=5cm T Nr. (red T)
    • filter rim: black, rippled, 40.5 mm filter thread
    • aperture ring: big, chrome, black aperture scale, straight lines, diagonal 22 line, Germany, very small rippled grip ring, clickless
    • aperture mark: red arrow
    • grip ring: small, silver rippled
    • locking plate: triangular, red dot
    • mount: chrome
  • aperture markings 2 - 22
  • single coated optics
  • v3b optical lens calculation

[v4b ZE CR arrb] 1948 Carl Zeiss Jena Contax aluminum red arrow, red dot pin, black mount




  • aluminum body with Contax Rangefinder mount
    • name ring: Carl Zeiss Jena Sonnar 1:2 f=5cm T Nr. (red T)
    • filter rim: black, rippled, 40.5 mm filter thread
    • aperture ring: big, silver, black aperture scale, straight lines, diagonal 22 line, Germany, very small rippled grip ring, clickless
    • aperture mark: red arrow
    • grip ring: small, silver rippled
    • locking plate: triangular, red dot
    • mount: black
  • aperture markings 2 - 22
  • single coated optics
  • v3b optical lens calculation

[v4b ZE CR abrb] 1948 Carl Zeiss Jena Contax aluminum black arrow, red dot pin, black mount

  • aluminum body with Contax Rangefinder mount
    • name ring: Carl Zeiss Jena Sonnar 1:2 f=5cm T Nr. (red T)
    • filter rim: black, rippled, 40.5 mm filter thread
    • aperture ring: big, silver, black aperture scale, straight lines, diagonal 22 line, Germany, very small rippled grip ring, clickless
    • aperture mark: black arrow
    • grip ring: small, silver rippled
    • locking plate: triangular, red dot
    • mount: black
  • aperture markings 2 - 22
  • single coated optics
  • v3b optical lens calculation

[v3b ZE CR irrb] 1948 Carl Zeiss Jena Contax Ivory aluminum red arrow, red dot pin, black mount


  • aluminum body with ivory paint finish and Contax Rangefinder mount
    • name ring: Carl Zeiss Jena Sonnar 1:2 f=5cm T Nr. (red T)
    • filter rim: black, rippled, 40.5 mm filter thread
    • aperture ring: big, silver, black aperture scale, straight lines, diagonal 22 line, Germany, very small rippled grip ring, clickless
    • aperture mark: red arrow
    • grip ring: small, silver rippled
    • locking plate: triangular, red dot
    • mount: black
  • aperture markings 2 - 22
  • single coated optics
  • v3b optical lens calculation

[v3b ZE CR arrb0] 1950 Carl Zeiss Jena Contax aluminum red arrow, red dot pin, black mount 50mm




  • aluminum body with Contax Rangefinder mount
    • name ring: Carl Zeiss Jena Sonnar 1:2 f=50mm T Nr. (red T)
    • filter rim: black, rippled, 40.5 mm filter thread
    • aperture ring: big, silver, black aperture scale, straight lines, diagonal 22 line, Germany, very small rippled grip ring, clickless
    • aperture mark: red arrow
    • grip ring: small, silver rippled
    • locking plate: triangular, red dot
    • mount: black
  • aperture markings 2 - 22
  • single coated optics
  • v3b optical lens calculation

[v3b ZE CR arrs0] 1950 Carl Zeiss Jena Contax aluminum red arrow, red dot pin, silver mount 50mm




  • chrome plated brass body, chrome finish with Contax Rangefinder mount
    • name ring: Carl Zeiss Jena Sonnar 1:2 f=50mm T Nr. (red T)
    • filter rim: black, rippled, 40.5 mm filter thread
    • aperture ring: big, chrome, black aperture scale, straight lines, diagonal 22 line, Germany, very small rippled grip ring, clickless
    • aperture mark: red arrow
    • grip ring: small, silver rippled
    • locking plate: triangular, red dot
    • mount: chrome
  • aperture markings 2 - 22
  • single coated optics
  • v3b optical lens calculation

[v3b ZE KF b] 1952 Carl Zeiss Jena KEF










  • all black finish with KEF mount
    • name ring: Carl Zeiss Jena Sonnar 1:2 f=50mm T Nr., Carl Zeiss Jena Sonnar 2/50 T 1Q
    • filter rim: black, smooth
    • aperture mark: red arrow
    • aperture ring: black, white dots, small grip rippled grip ring, clickless
    • mount: black, threaded, M33.5x0.5
  • aperture markings (2 - 22) dot marks without letters
  • single coated optics
  • v3b optical lens calculation

[v3b ZE KF bY] 1952 Carl Zeiss Jena KEF 551702




  • all black finish with M33x0.5 thread
    • name ring: Carl Zeiss Jena Sonnar 2/50 1Q
    • filter rim: black, smooth
    • aperture mark: missing
    • aperture ring: missing, clickless
    • mount: black, threaded, M33x0.5
  • aperture markings (2 - 22)
  • single coated optics
  • v3b optical lens calculation

[v4b ZO CR sot2] 1950 Zeiss-Opton Contax silver rim T 12 aperture blades






  • chrome over brass body, chrome finish with Contax Rangefinder mount
    • name ring: Zeiss-Opton Sonnar 1:2 f=50mm T Nr(red T)
    • filter rim: chrome, 40.5 mm filter thread, smooth
    • aperture ring: big, chrome, 2 scales, black aperture scale, straight lines, very small rippled grip ring, clickless
    • aperture mark: black arrow over grip ring
    • grip ring: chrome rippled
    • locking plate: small red rectangle at tip
    • mount: chrome, (Made in Germany)
  • aperture markings 2 - 22
  • single coated optics
  • v4b optical lens calculation

[v4b ZO CR sot1] 1952 Zeiss-Opton Contax silver rim T 11 aperture blades






  • chrome over brass body, chrome finish with Contax Rangefinder mount
    • name ring: Zeiss-Opton Sonnar 1:2 f=50mm T Nr(red T)
    • filter rim: chrome, 40.5 mm filter thread, smooth
    • aperture ring: big, chrome, 2 scales, black aperture scale, straight lines, very small rippled grip ring, clickless
    • aperture mark: black arrow over grip ring
    • grip ring: chrome rippled
    • locking plate: small red rectangle at tip
    • mount: chrome, (Made in Germany)
  • aperture markings 2 - 22
  • single coated optics
  • v4b optical lens calculation

[v4b ZO CR bot] 1952 Zeiss-Opton Contax black rim T 11 aperture blades




  • chrome over brass body, chrome finish with Contax Rangefinder mount
    • name ring: Zeiss-Opton Sonnar 1:2 f=50mm T Nr(red T)
    • filter rim: black, 40.5 mm filter thread, smooth
    • aperture ring: big, chrome, 2 scales, black aperture scale, straight lines, very small rippled grip ring, clickless
    • aperture mark: black arrow over grip ring
    • grip ring: chrome rippled
    • locking plate: small red rectangle at tip
    • mount: chrome, (Made in Germany)
  • aperture markings 2 - 22
  • single coated optics
  • v4b optical lens calculation

[v4b ZO CR bo] 1953 Zeiss-Opton Contax black rim




  • chrome over brass body, chrome finish with Contax Rangefinder mount
    • name ring: Zeiss-Opton Sonnar 1:2 f=50mm Nr
    • filter rim: black, 40.5 mm filter thread, smooth
    • aperture ring: big, chrome, 2 scales, black aperture scale, straight lines, very small rippled grip ring, clickless
    • aperture mark: black arrow over grip ring
    • grip ring: chrome rippled
    • locking plate: small red rectangle at tip
    • mount: chrome, (Made in Germany)
  • aperture markings 2 - 22
  • single coated optics
  • v4b optical lens calculation

[v4b ZO CR bz] 1954 Carl Zeiss Contax black rim




  • chrome over brass body, chrome finish with Contax Rangefinder mount
    • name ring: Carl Zeiss Sonnar 1:2 f=50mm Nr
    • filter rim: black, 40.5 mm filter thread, smooth
    • aperture ring: big, chrome, 2 scales, black aperture scale, straight lines, very small rippled grip ring, clickless
    • aperture mark: black arrow over grip ring
    • grip ring: chrome rippled
    • locking plate: small red rectangle at tip
    • mount: chrome, (Made in Germany)
  • aperture markings 2 - 22
  • single coated optics
  • v4b optical lens calculation

[v4b ZO RR b] 1955 Carl Zeiss Robot Royal black rim




  • heavy chrome over brass body, chrome finish with Robot Royal mount
    • name ring: Carl Zeiss Sonnar 1:2 f=50mm Nr, steep narrow
    • filter rim: black, 38 mm filter thread, smooth
    • aperture ring: chrome, 1 scale, colored aperture scale (yellow, red, green, black), very small rippled grip ring, with full stop clicks, ROBOT Germany
    • DOF scale: chrome, colored dots (yellow, red, green, black) with lines, middle mark with black diamond symbol
    • focus ring: chrome, colored distance dots (yellow, red, green, black), small m, 0,75 - 20, small rippled grip ring, 3 rounded focus tabs
    • mount: chrome, 2 red dots
  • aperture markings 2 - 22
  • single coated optics
  • v4b optical lens calculation

[v4b ZO CR bzR] 1955 Carl Zeiss Contax black rim Robot head







  • chrome over brass body, chrome finish with Contax Rangefinder mount
    • name ring: Carl Zeiss Sonnar 1:2 f=50mm Nr, steep narrow
    • filter rim: black, 40.5 mm filter thread, smooth
    • aperture ring: big, chrome, 2 scales, black aperture scale, straight lines, very small rippled grip ring, clickless
    • aperture mark: black arrow over grip ring
    • grip ring: chrome rippled
    • locking plate: small red rectangle at tip
    • mount: chrome, (Made in Germany)
  • aperture markings 2 - 22
  • single coated optics
  • v4b optical lens calculation

Sonnar lenses from other companies

[v3b ZK CR ZK] 1948 KMZ ZK P Contax



  • aluminum body with flat head and with Contax Rangefinder mount (PT3515 body)
    • name ring: (1948) (ZORKII) ZK 1:2 F=5CM P N (red P), flat
    • filter rim: silver, rippled, 40.5 mm filter thread
    • aperture ring: small, silver, black aperture scale on separate, screwed on, ring with 2 small finger grips, clickless
    • aperture mark: big black arrow inside gap in grip ring
    • grip ring: big, chrome rippled
    • locking plate: red painted top side
    • mount: silver, horizontal cut
  • aperture markings 2 - 22
  • single coated optics
  • v3b lens calculation
[v3k VD CR j8mbr0] 1974 VALDAI Jupiter-8M Contax




  • chrome finish body with black filter rim and with Contax Rangefinder mount
    • name ring: JIOPITER-8M 2/50, flat
    • filter rim: black, rippled, 40.5 mm filter thread
    • aperture ring: small, chrome, 2 black aperture scales, no lines, full stop clicks
    • aperture mark: red dot above grip ring
    • grip ring: big, chrome rippled
    • locking plate: square with red painted front side
    • mount: chrome
  • aperture markings 2 - 22
  • single coated optics
  • v4k optical lens recalculation
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