Pentacon Pentacon 135mm f2.8 Heritage

Overview

The Pentacon Auto MC 135mm f/2.8 is a vintage medium-telephoto prime born in East Germany, produced from the early 1970s through the late 1980s. It descends directly from the Meyer-Optik Görlitz Orestor 135mm design, carried forward after Pentacon was formed in 1962 as a merger of Kamera- und Kinowerke Dresden, Meyer-Optik Görlitz, and Kamerawerke Freital. Built on socialist principles as a Volkseigener Betrieb ('people's enterprise'), the Pentacon name itself is an amalgamation of the popular 'Contax' camera and the 'Penta' prism used on medium-format SLRs. The lens leveraged the widespread M42 screw-mount (originally designed by Carl Zeiss in the 1930s), which made it broadly compatible with Pentax and other bodies. Reviewers describe it as an 'underrated gem from the cold war' and 'a gem from the Iron Curtain' era, noting it was long overlooked partly because of the cheapish, communist reputation of East German gear rather than any lack of optical merit. Its cult following today stems from its affordability, its warm rendering, and its ability to pull creative shooters into 'a different viewing experience' when used for portraiture. No specific product nickname (like 'Bokeh King') is established in these reviews.

Verdict: The Pentacon Auto MC 135mm f/2.8 is a characterful, budget-friendly vintage portrait lens for creative photographers who value warm color, pleasant background blur, and a soft vintage look wide open, with excellent sharpness on tap when stopped down. It's ideal for those willing to shoot manually and embrace its portrait-focused strengths rather than expecting clinical, do-everything performance.

Optical Character

Bokeh

Brilliant and creative background blur well-suited to isolating portrait subjects, sometimes characterized as swirly.

Color

Warm color tones as noted by reviewers.

Sharpness wide open

Modest and slightly soft wide open, delivering excellent results when stopped down to f/5.6-f/8.

Contrast

Multi-coating was applied for improved contrast; specific micro-contrast behavior unknown.

Community Insights

What people love

Warm color rendering that gives portraits a pleasing vintage look
Excellent value for money, with very low average used prices
Beautiful background blur and subject isolation ideal for portraits from a distance
Excellent sharpness once stopped down to f/5.6-f/8
Long, smooth ~300° focus throw that allows precise manual focusing
Easy adaptation to modern DSLRs and mirrorless bodies via a simple M42 adapter with no electronics or modifications needed
Encourages creative, deliberate shooting and a 'different viewing experience'

What people dislike

Modest, slightly soft sharpness when shot wide open at f/2.8
Not versatile as a general or nature/wildlife lens; effectively destined for portraiture
Manual-only operation with no autofocus or electronic communication

Pro Tips

Stop down to f/5.6-f/8 for excellent sharpness; use f/2.8 mainly when you want the soft, vintage portrait look
Use it primarily as a portrait lens to exploit the compressed perspective and background separation
Take advantage of the ~300° focus throw for precise manual focusing on modern mirrorless bodies with focus peaking or magnification
Set the Auto/Manual switch appropriately for your specific M42 body or adapter

Sources (1)

Web-grounded synthesissecondary

The Pentacon Auto MC 135mm f/2.8 is a vintage medium-telephoto prime born in East Germany, produced from the early 1970s through the late 1980s. It descends directly from the Meyer-Optik Görlitz Orestor 135mm design, carried forward after Pentacon was formed in 1962 as a merger of Kamera- und Kinowerke Dresden, Meyer-Optik Görlitz, and Kamerawerke Freital. Built on socialist principles as a Volkseigener Betrieb ('people's enterprise'), the Pentacon name itself is an amalgamation of the popular 'Contax' camera and the 'Penta' prism used on medium-format SLRs. The lens leveraged the widespread M42 screw-mount (originally designed by Carl Zeiss in the 1930s), which made it broadly compatible with Pentax and other bodies. Reviewers describe it as an 'underrated gem from the cold war' and 'a gem from the Iron Curtain' era, noting it was long overlooked partly because of the cheapish, communist reputation of East German gear rather than any lack of optical merit. Its cult following today stems from its affordability, its warm rendering, and its ability to pull creative shooters into 'a different viewing experience' when used for portraiture. No specific product nickname (like 'Bokeh King') is established in these reviews.

https://www.pentaxforums.com/userreviews/pentacon-135mm-f2-8-auto-mc.htmlhttps://vintage-photo.nl/pentacon-135-f2-8-auto-review/