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2026-11-09
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Cosina 28-70mm f/4 MC Macro Lens for Pentax PK-A Mount - Japan - Clean
$45.00
$58.5
30% OFF
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Product Details
Description
Specifications
Care Guide
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.
Daily Cleaning: Use a soft brush or damp cloth to gently wipe away dirt. Avoid harsh chemicals. For mesh areas, use diluted mild detergent and a soft brush.
Drying: Air dry in a cool, shaded place after cleaning. Avoid direct sunlight or high heat, which can cause fading and glue deterioration.
Storage: Stuff with paper to maintain shape when not in use. Store in a dry, ventilated area to prevent mold. Rotate between multiple pairs to extend lifespan.
Usage Notes: Designed for basketball. Not recommended for hiking, long-distance running, or other specialized sports where different performance features are required.