Pentax Asahi PK-Mount 70-210mm Zoom Lens (Mid-Barrel Component)

Object/Artifact

-

The TRP Camera Obscura Collection

Name/Title

Pentax Asahi PK-Mount 70-210mm Zoom Lens (Mid-Barrel Component)

Entry/Object ID

395

Tags

Standard

Description

This artifact appears to be the rear barrel and mount assembly of an SMC Pentax-A 70-210mm f/4 zoom lens. It features the Pentax K-mount (indicated by the yellow "PK" stamp and red alignment dot) and a manual aperture ring ranging from f/4 to f/22. The barrel markings include focal length indicators (70, 100, 135, 210) and magnification ratios, along with a red "R" infrared index line. The SMC (Super Multi-Coated) Pentax-A series was highly regarded for introducing "Auto" aperture contacts, allowing the camera body to control the lens. While this specific piece is currently separated from its front glass elements, it serves as a clear mechanical example of the robust engineering found in 1980s Japanese SLR optics.

Category

Lens