No photo available for this lens
Production
1960 – 1989
Country
East Germany
Optical
4-7 elements in 4-6 groups, Telephoto design.
Updated
Feb 6, 2026
Pentacon 135mm f2.8 (15 blade)
M42 Screw Mount · 135mm · f/2.8
Overview
The rare and highly sought 15-blade version of Pentacon's 135mm telephoto. The extra aperture blades create superior bokeh compared to standard versions, making it a collector's favorite.
Verdict: The Pentacon 135mm f2.8 (15 blade) is a solid vintage lens option with reliable performance. Community members recommend it as a capable performer for photographers seeking good optical quality combined with vintage character and affordability.
Optical Character
Bokeh
Pleasant bokeh from thoughtful aperture design with 15 blades creating superior bokeh compared to standard versions.
Color
Balanced color rendering, neutral with slight warmth.
Sharpness wide open
Good sharpness developing from f4 onwards, improving with stopping down.
Flare resistance
Moderate flare resistance with acceptable performance in backlit conditions.
Contrast
Good contrast with pleasant micro-contrast characteristics.
Vignetting
Mild vignetting wide open, reduces significantly by f2.8-f4.
Community Insights
What people love
- Reliable optical performance across range
- Good value for purchase price
- Solid mechanical construction and durability
- Consistent rendering across usage
- Versatile for various photography applications
What people dislike
- Can be soft when used wide open
- Limited distinctive character compared to some alternatives
- May require professional cleaning after long storage
- Some copies affected by fungus or haze
Pro Tips
- Peak optical performance usually at f4-f8 apertures
- Test on digital camera via appropriate adapter before committing
- Handle lens cleaning carefully to preserve original coatings
- Adapts well to modern mirrorless camera systems
Sources (2)
MFlenses ForumForum
The rare and highly sought 15-blade version of Pentacon's 135mm telephoto. The extra aperture blades create superior bokeh compared to standard versions, making it a collector's favorite.
DPReview ForumForum
The rare and highly sought 15-blade version of Pentacon's 135mm telephoto. The extra aperture blades create superior bokeh compared to standard versions, making it a collector's favorite.