Cosina 19-35mm f/3.5-4.5 PK-A

This Cosina 19-35mm f/3.5-4.5 features a Pentax PK-A (PK-AR) mount and offers an impressive ultra-wide zoom range in a compact, lightweight package. Manufactured by Cosina, it was sold under several different brand names and has earned a reputation for offering excellent value for money.

Its 19–35mm focal range makes it ideal for landscapes, architecture, interiors, and travel photography. The manual focus mechanism is smooth and precise, while the compact construction makes it easy to carry. When stopped down, the lens delivers pleasing sharpness, good contrast, and natural colour reproduction, making it a popular choice among film photography enthusiasts.

The PK-A mount supports automatic aperture communication with compatible Pentax cameras and can easily be adapted to modern mirrorless systems.