Cosina Cosinon Auto 55mm F/2.1

Mount

PENTAX K

Focal Length

55mm

Max Aperture

F/2.1

Type

Prime

Brand

Unknown

Cosina Cosinon Auto is a 55mm prime lens for the Pentax K mount, with a maximum aperture of f/2.1 for general-purpose photography and low-light use. It focuses at a short to moderate close distance for standard subjects.

Last verified: 2026-04-27