Used Pentax-D FA 100mm F2.8 Macro WR

Condition & contents

At a glance: Pentax smc D FA 100mm f/2.8 Macro WR - weather-sealed 1:1 macro prime for K-mount, full-frame coverage.

About this lens

The smc PENTAX-D FA 100mm f/2.8 Macro WR is Pentax's weather-resistant 1:1 macro prime, covering the full-frame image circle and equally at home on APS-C bodies. True life-size magnification, a compact build and full weather sealing make it unusually practical for a macro lens - most competitors of its era were unsealed.

Build & handling

Works with

• All Pentax K-mount bodies, APS-C and full-frame
• Stabilised by in-body Shake Reduction on Pentax bodies
• 49mm screw-in filters

Best for

A dual-purpose lens - true 1:1 macro for insects, flowers, jewellery and product work, and a very capable short telephoto portrait lens at 100mm (153mm equivalent on APS-C). The weather sealing makes outdoor macro genuinely viable in damp conditions. Paired with a Pentax body's in-body Shake Reduction, handheld close-up work is more practical than the specification alone suggests.

Frequently asked questions

Is it true 1:1 macro?

Yes - life-size reproduction at the 0.303m minimum focus distance, meaning the subject is projected onto the sensor at its actual size.

Will it work on a full-frame Pentax?

Yes. The D FA designation means it covers the full-frame image circle, so it works natively on the K-1 series as well as on APS-C bodies.