Question 1

Is the Pentax 28-105mm f/3.5-5.6 compatible with APS-C Pentax bodies?

Accepted Answer

Yes, the HD Pentax-D FA 28-105mm f/3.5-5.6 ED DC WR works on both full-frame and APS-C Pentax K-mount bodies. On APS-C, the crop factor shifts the effective focal range to roughly 43–161mm, making it more of a mid-to-telephoto zoom than a true wide-angle. If you want genuine wide coverage on APS-C, a lens like the SMC Pentax-DA 18-135mm f/3.5-5.6 starts wider and is purpose-built for cropped sensors.

Question 2

How does the Pentax 28-105 f3.5-5.6 perform for travel photography?

Accepted Answer

The weather-resistant sealing (WR) is the standout feature for travel — it gives you real confidence shooting in rain or dusty environments. The DC autofocus motor is notably quiet and smooth, which matters in quiet environments like museums or ceremonies. Sharpness is consistent across the focal range, and the HD coating keeps contrast clean in backlit situations. It's not the fastest zoom out there, but for daylight and well-lit travel scenes it handles itself reliably.

Question 3

What does 'ED DC WR' mean on the Pentax 28-105mm lens?

Accepted Answer

ED stands for Extra-low Dispersion glass, which reduces chromatic aberration — those colour fringing artefacts that appear around high-contrast edges. DC means Direct Drive, a type of autofocus motor that's quieter and smoother than older screw-drive systems. WR means Weather Resistant — the lens has sealing at critical points to protect against moisture and dust. Together they signal a lens built for real-world use rather than studio-only work.

Question 4

Is buying a used Pentax 28-105mm worth it?

Accepted Answer

Absolutely, especially if you're already shooting Pentax K-mount. The lens has a solid build quality with weather sealing, so pre-owned copies generally hold up well. On Camera-tweedehands.nl, each used lens is professionally inspected and individually photographed, and comes with a minimum 12 months warranty — so you're not buying blind. It's a practical way to get a versatile full-frame zoom without paying new retail pricing.

Question 5

How does the Pentax 28-105mm compare to the HD Pentax-D FA 24-70mm f/2.8 ED SDM WR?

Accepted Answer

The HD Pentax-D FA 24-70mm f/2.8 ED SDM WR is a constant f/2.8 aperture lens — two full stops faster at the wide end and significantly faster at the tele end. That makes it much better in low light and for subject separation. The 28-105mm trades that speed for extra reach (up to 105mm vs 70mm) and a more compact, lighter form factor. If you prioritise light weight and longer reach for travel, the 28-105mm wins. If you need low-light performance and shallower depth of field, the 24-70mm f/2.8 is the stronger tool.

Question 6

Does the Pentax 28-105mm 3.5-5.6 work well for portraits?

Accepted Answer

At 105mm and f/5.6, you can get decent subject separation for portrait work, though it won't produce the creamy background blur of a fast prime. The focal length itself is flattering — 85–105mm is a classic portrait range. For occasional portrait use alongside travel and everyday shooting, it does the job well. If portraits are your main focus, the HD Pentax-D FA Macro 100mm f/2.8 ED AW gives you a faster aperture and the bonus of macro capability at a similar focal length.

Cart (0)

Pentax HD Pentax-D FA 28-105mm f/3.5-5.6 ED DC WR

Get notified when available

Do you have a Pentax HD Pentax-D FA 28-105mm f/3.5-5.6 ED DC WR?

About the Pentax HD Pentax-D FA 28-105mm f/3.5-5.6 ED DC WR

Key Specifications

Who is the HD Pentax-D FA 28-105mm f/3.5-5.6 ED DC WR for?

Buying a used Pentax 28-105mm f/3.5-5.6

Frequently asked questions