Pentax's full-frame 35mm prime — the HD D FA 35mm f/2 for K-mount with premium optics.
The Pentax HD D FA 35mm f/2 is a full-frame wide-angle prime for Pentax K mount, covering the popular 35mm focal length with a fast f/2 aperture. The D FA designation confirms full-frame coverage for the Pentax K-1 and K-1 II. HD coating provides improved light transmission. One of Pentax's newer prime designs intended for their full-frame DSLR system.
Optical performance is very good. Sharpness is excellent from f/2 with the HD coating providing superior contrast over older SMC alternatives. The 35mm focal length is versatile for street, documentary, and everyday photography. Autofocus is provided by the body's screw-drive motor. Benefits significantly from the K-1's excellent 5-axis Shake Reduction.
Pentax K mount, full-frame (D FA). Filter thread is 49mm — compact. Weight is approximately 193 grams — very lightweight for a full-frame 35mm prime. Build quality is good with weather resistance. The HD coating represents Pentax's latest coating technology. Compatible with all Pentax K-mount bodies — provides a 52mm equivalent on APS-C.
Available on the used market at moderate prices. Check AF accuracy and clean optics. An excellent full-frame prime for Pentax K-1 shooters. The lightweight design, weather resistance, and HD coating make it a practical everyday lens. The 5-axis SR on the K-1 compensates brilliantly for the lack of in-lens IS.