SMC Pentax-FA 80–320mm f/4.5–5.6 – Telephoto Zoom – K Mount – Autofocus

Description:
SMC Pentax-FA 80–320mm f/4.5–5.6 telephoto zoom lens for Pentax KAF mount, in excellent condition. This full-frame-compatible lens offers a 4× zoom range ideal for wildlife, travel, and sports. Autofocus is screw-driven via the camera body, and the lens includes an “A” setting on the aperture ring for full automation on compatible Pentax DSLRs.

Pentax’s SMC (Super Multi-Coating) enhances contrast and reduces flare, while the 8-blade diaphragm delivers smooth bokeh. A classic from the late film era, this lens remains a solid performer for budget-conscious shooters seeking reach and Pentax color rendering.

Excellent Condition

Key Features:

• Focal Length: 80–320mm
• Maximum Aperture: f/4.5–5.6
• Mount: Pentax KAF (screw-drive autofocus)
• Optical Design: 13 elements in 10 groups
• Minimum Focus Distance: 1.5m
• Maximum Magnification: 0.28×
• Filter Thread: 58mm
• Aperture Blades: 8
• Autofocus: Screw-drive (no internal motor)
• Build: Lightweight plastic barrel
• Weight: ~550g
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Included:

• SMC Pentax-FA 80–320mm f/4.5–5.6 lens
• Front and rear lens caps
  

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Collector Notes:
This lens delivers classic Pentax tonality with rich colour and pleasing contrast. Sharpest between 80–200mm, especially at f/8–f/11. Beyond 250mm, softness and chromatic aberration increase, but stopping down improves performance. The rotating front element complicates polarizer use, and zoom creep may develop over time. Available in black or silver finish, it’s a nostalgic yet functional choice for Pentax enthusiasts.