Cosina 28-70mm f/4 MC Macro Lens for Pentax PK-A Mount - Japan - Clean

Item Description  Up for sale is a classic Cosina 28-70mm f/4 MC Macro zoom lens for the Pentax PK-A mount.  This is a versatile, constant-aperture manual focus lens known for its solid Made in Japan construction. Unlike many budget zooms of this era that have a variable aperture (like f/3.5-4.8), this model maintains a consistent f/4 throughout the zoom range.  Key Features:  • Mount: Pentax PK-A (Works on vintage Pentax SLRs and modern DSLRs with aperture control from the body).  • Constant Aperture: f/4 across the entire 28-70mm range.  • Macro Function: Includes a dedicated macro mode for close-up photography.  • Build: Sturdy metal body with a multi-coated (MC) glass design.  • Filter Size: 62mm.  Condition:  • Optics: Glass is clear with no major scratches or fungus.  • Mechanics: Focus is smooth; aperture blades are snappy and oil-free.  • Cosmetic: Minimal wear to the barrel; grips are intact.