Product Overview

The Pentax D FA 28-105mm f/3.5-5.6 ED DC WR is the kind of everyday zoom you bolt onto a K-mount body and rarely take off. Covering true wide angle through to a handy medium telephoto, it’s built for full-frame performance but stays compact and light enough for long days on the track, in the city, or out bush. Weather-resistant sealing, HD and SP coatings, and a quick, quiet DC autofocus motor mean it keeps punching out clean, contrasty files when the weather turns or the light gets tricky.

Optically, you’re looking at 15 elements in 11 groups with ED and aspherical glass to keep aberrations in check and detail crisp across the frame. Focus down to 0.5m with 0.22x magnification for close-up detail, and use the Quick-Shift system to fine-tune focus instantly without diving into menus. Paired with a Pentax full-frame body like the K-1, this lens delivers reliable sharpness, natural colour and smooth bokeh, making it a practical workhorse for landscapes, travel, street and portraits across Australia.

Key Features

• Versatile 28–105mm standard zoom range covers wide-angle to medium telephoto, so you can frame everything from sweeping landscapes to tight portraits with a single lens.
• Bright f/3.5–5.6 maximum aperture range balances low-light capability with compact size, giving you dependable performance without adding bulk to your kit.
• Weather-resistant (WR) construction with multiple seals helps keep out dust and moisture, allowing confident shooting in rain, mist or dusty environments.
• HD multi-layer coating and SP (Super Protect) front element coating reduce flare, ghosting, water and grease, delivering crisp, high-contrast images and easier cleaning in the field.
• 15-element, 11-group optical design with ED and aspherical elements minimises chromatic and spherical aberrations, providing sharp, detailed images across the frame.
• Built-in DC autofocus motor offers smooth, quiet and responsive focusing, ideal for both stills and discreet shooting situations.
• Quick-Shift Focus System lets you instantly fine-tune focus manually after AF locks, giving precise control for critical subjects.
• Rounded 9-blade diaphragm produces smooth, natural-looking bokeh, enhancing subject separation in portraits and close-up shots.
• Compact, lightweight design (around 440 g) makes it an excellent everyday walk-around lens for travel and general photography.
• 62mm filter thread and included hood support easy use of polarising and protective filters while helping to control flare and protect the front element.