A.Schacht Ulm Travenar Ulm Travenar Heritage

Overview

The Schacht company was founded in Munich in 1948 by Albert Schacht, who had previously held a management position at Zeiss and Steinheil. From 1954 onward, Schacht manufactured its lenses in Ulm on the Danube (hence the 'Ulm' designation). According to the Nikolaus-Burgard review, almost all Schacht lenses are optical designs by Ludwig Bertele, the inventor of the Sonnar, meaning the Travenar line can be considered a direct development of the Zeiss Sonnar formula. The company was sold in 1967 and lens production ceased in 1970. Reviewers describe Schacht lenses as 'mechanical and haptic delicacies' that flew under the radar for decades and are only recently being rediscovered, with some arguing they deserve to be mentioned alongside Leica and Zeiss. No established community nicknames appear in the reviews. The cult following stems partly from the beautiful, art-object build and the 16-bladed aperture design, though at least one reviewer cautions the reputation may outpace real-world optical performance. The Travenar name covers multiple focal lengths (a 90mm f2.8 and a 135mm f3.5 are documented in these reviews).

Verdict: The Schacht Ulm Travenar is a beautifully built, Sonnar-heritage vintage lens (courtesy of Ludwig Bertele) that appeals most to collectors who value exquisite mechanics and mid-century optical design. The 135mm f3.5 impresses reviewers as genuinely convincing, while the 90mm f2.8 is solid and sharp in its mid-aperture sweet spot but delivers only acceptable, unremarkable bokeh — leading some to call it over-hyped and overpriced. Best for enthusiasts who appreciate craftsmanship and Sonnar lineage over dramatic vintage character.

Optical Character

Bokeh

OK and acceptable but nothing outstanding on the 90mm f2.8; the 16-bladed aperture does not meaningfully enhance it.

Sharpness wide open

90mm f2.8 is good and acceptably sharp at f5.6-f11 including corners; 135mm f3.5 is described as very convincing.

Community Insights

What people love

Exceptional mechanical build and haptics — reviewers call Schacht lenses 'mechanical and haptic delicacies' that could hardly be built to higher quality
Beautiful, art-object design and appearance ('looks like a work of art,' 'superb design')
The distinctive 16-bladed aperture
Sonnar heritage — designs attributed to Ludwig Bertele, inventor of the Sonnar, giving convincing optical performance
Good, acceptably sharp results in the mid-aperture range (f5.6–f11 on the 90mm)

What people dislike

Considered overpriced and over-hyped by at least one reviewer, driven by scarcity rather than merit
Bokeh is only 'OK' and nothing special despite the multi-bladed aperture
Sharpness outside the mid-aperture range reportedly needs software correction
Value rated low (5/10 by one 90mm reviewer)

Pro Tips

Shoot the 90mm f2.8 in the f5.6–f11 range for its best, sharpest results with good corners and edges
For the 135mm, consider an M42 helicoid (macro focusing) adapter to both reach infinity and significantly shorten the otherwise long 150cm minimum focus distance
Adapt via a standard M42-to-mirrorless/DSLR adapter for the widest camera compatibility
Don't expect the 16-blade aperture alone to transform your bokeh — frame and light deliberately

Sources (1)

Web-grounded synthesissecondary

The Schacht company was founded in Munich in 1948 by Albert Schacht, who had previously held a management position at Zeiss and Steinheil. From 1954 onward, Schacht manufactured its lenses in Ulm on the Danube (hence the 'Ulm' designation). According to the Nikolaus-Burgard review, almost all Schacht lenses are optical designs by Ludwig Bertele, the inventor of the Sonnar, meaning the Travenar line can be considered a direct development of the Zeiss Sonnar formula. The company was sold in 1967 and lens production ceased in 1970. Reviewers describe Schacht lenses as 'mechanical and haptic delicacies' that flew under the radar for decades and are only recently being rediscovered, with some arguing they deserve to be mentioned alongside Leica and Zeiss. No established community nicknames appear in the reviews. The cult following stems partly from the beautiful, art-object build and the 16-bladed aperture design, though at least one reviewer cautions the reputation may outpace real-world optical performance. The Travenar name covers multiple focal lengths (a 90mm f2.8 and a 135mm f3.5 are documented in these reviews).

https://www.pentaxforums.com/userreviews/schacht-ulm-travenar-90mm-f2-8.htmlhttps://www.nikolaus-burgard.de/objektivvorstellungen-lens-reviews/schacht-ulm/schacht-ulm-travenar-135mm-f3-5/