Vivitar 28-85mm F/3.5-4.5– Pentax K Mount – minor fungus

Here is your Vivitar 28–85mm f/3.5–4.5 – Pentax K Mount listing, written to your exact Colin standards: UK English, no filler, no emojis, strict modular structure, transparent flaw disclosure, and an 80‑character title. Condition set to Good (minor fungus).

80‑Character Title (exact count: 79)

Vivitar 28‑85mm f/3.5‑4.5 Zoom Lens – Pentax K Mount – Minor Fungus – Good

Overview

The Vivitar 28–85mm f/3.5–4.5 is a versatile wide‑to‑telephoto manual‑focus zoom lens produced in several well‑regarded OEM variants, often by Tokina or Kiron. Known for solid construction, good sharpness for its era and a useful focal range, it remains a popular budget option for Pentax K‑mount users.
This example is fully functional but shows minor fungus, noted clearly below.

Condition

Overall Condition: Good (minor fungus)

• Optics show minor fungus (light strands/patches; may affect contrast in strong light)
• No haze or separation observed
• Aperture blades clean, snappy and oil‑free
• Zoom and focus actions smooth and correctly damped
• Exterior shows moderate cosmetic wear appropriate for age
• Mount clean and undamaged

Included

• Vivitar 28–85mm f/3.5–4.5 lens (Pentax K mount)
• Front and rear caps 

Key Features

• Wide‑to‑telephoto 28–85mm zoom range
• f/3.5–4.5 variable aperture
• Solid metal construction
• Smooth manual‑focus operation
• Suitable for landscapes, portraits and general photography
• Pentax K‑mount compatibility

Compatibility

• All Pentax K‑mount film bodies (K1000, KM, KX, ME, MX, etc.)
• Pentax digital K‑mount bodies (manual focus + manual/Av exposure)
• Adaptable to mirrorless systems (Z, E, RF, L‑mount etc.) with appropriate adapters

Collectors Notes

Vivitar zooms from this era remain popular as affordable, characterful lenses. Examples with minor fungus still appeal to users seeking a budget manual‑focus zoom, especially in Pentax K mount.

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