Tamron AF Aspherical 28-80mm f3.5-5.6 Lens Pentax K Mount Caps Tested

Description

The Tamron AF Aspherical 28-80mm f/3.5-5.6 (Model 177D) is a lightweight, compact walkaround standard zoom lens designed for Pentax 35mm autofocus SLR cameras and digital SLR bodies (K-mount). Spanning from 28mm wide-angle to 80mm portrait telephoto, it features hybrid aspherical glass elements to minimize optical aberrations and distortion. Built with an aperture ring featuring an "A" (Auto) position lock button, standard 58mm front filter thread, distance scale markings, and a minimum focus distance of 0.7m across the zoom range. Fully compatible with modern Pentax digital SLRs (such as K-70, K-3, K-50) and vintage Pentax AF film bodies (such as MZ-5, MZ-7, Z-1). Serial number 156236. Complete with front snap-on Tamron cap and rear K-mount cap.

Condition

Overall Condition: Excellent

Cosmetically in clean, well-preserved condition with minimal signs of handling on the black barrel and rubber zoom grip. Optical inspection shows clean glass free from scratches, haze, or fungus, with only minor internal dust specks typical for a zoom of this vintage. Zoom ring turns smoothly, autofocus drive couples crisp and operates properly, aperture ring turns with distinct clicks, and the 'A' position lock functions correctly. Diaphragm blades are clean, dry, and responsive. Serial number 156236. Fully tested and working.

Included

• Tamron AF Aspherical 28-80mm f/3.5-5.6 Lens (Pentax K Mount, Serial No. 156236)
• Tamron Front Snap-On Lens Cap
• Rear K-Mount Bayonet Cap

Key Features

• Versatile 28-80mm focal range covering landscape, everyday street snapshot, and portraiture
• Aspherical optical design for sharp contrast and minimized optical distortion
• Pentax K-AF bayonet mount with full electrical contacts and mechanical AF coupling
• Dedicated aperture ring with 'A' setting lock for full modern P/Av/Tv/M digital exposure control
• Compact, lightweight plastic chassis with standard 58mm front filter thread

Collector's Notes

The Tamron 177D 28-80mm was one of the most popular third-party kit zoom upgrades during the late 35mm film era. Because it features a physical aperture ring with an 'A' lock setting, it remains exceptionally versatile—functioning seamlessly across both classic Pentax 35mm AF film cameras and modern Pentax K-mount digital SLRs.

Keywords

Tamron 28-80mm Pentax, Tamron 177D Pentax, Pentax K Mount AF Lens, Vintage Tamron Zoom, Pentax Digital SLR Lens, Tested Tamron 28-80