An early Chiyoko coupled LTM telephoto for the Minolta-35, pairing a four-element design with ten blades and a long-focus chrome barrel.

Chiyoda Kogaku Tele Rokkor 135mm f/4

LTM mount

No listings tracked for this lens right now.

The Chiyoda Kogaku Tele Rokkor 135mm f/4 is a LTM-mount lens for Leica rangefinder cameras. Leica price index →

Reference maintained by Thomas Boots

How it compares

Measured against the 23 other 135mm LTM-mount lenses in the catalogue.

f/4 Maximum aperture Faster than 22% of them

Specification

Focal Length: 135mm

Aperture: 𝑓/4

Release Year (from): 1949

Production Year (to): 1953

Diameter: 50 mm

Filter Size: 40 mm (E40)

Minimum Focus Distance: 2.5m

Elements in Groups: 4/3

Aperture Blades: 10

Mount: LTM

Colors: Chrome

About this lens

Chiyoda Kogaku Tele Rokkor 135mm f/4

Optical Qualities

The Tele Rokkor uses four elements in three groups and a ten-blade diaphragm. Coated examples can carry a C marking, but belong to the same optical profile.

History

Chiyoda Kogaku produced this early Minolta-35 telephoto from 1949 to 1953. Three mechanical generations are documented, while the core optical identity remained consistent.

Handling

Most examples focus to approximately 2.5 m, while the earliest generation can reach about 2.0 m. The lens accepts 40 mm filters, measures about 50 mm in diameter and weighs roughly 435 g. Barrel length varies by generation and is therefore left unspecified.

Compatibility

This is a native Leica thread mount lens with documented rangefinder coupling. It was supplied for the Minolta-35 and is compatible with suitable LTM rangefinder bodies.

Sources