Product Overview

The HD PENTAX-D FA★ 50mm F1.4 SDM AW is a no-nonsense, pro-grade standard prime built for shooters who care more about results than spec sheets. On full-frame it’s a classic 50, on APS-C it behaves like a short tele, giving you a natural perspective with plenty of reach for portraits, events and low-light work. The fast f/1.4 aperture lets you keep ISO down and shutter speeds up, so you can keep shooting clean, sharp frames long after the light has dropped.

Optically, this Star-series lens is all about bite and consistency. It’s sharp right from wide open, with rich contrast and controlled aberrations, backed by HD and Aero Bright II coatings to keep flare and ghosting in check when you’re shooting into the sun or under harsh lights. The rounded 9‑blade diaphragm delivers smooth, creamy bokeh, while the in-lens SDM autofocus motor locks on quietly and confidently. Add full weather sealing, an electromagnetic diaphragm for rock-solid exposure in stills and video, and Pentax’s quick-shift manual override, and you’ve got a tough, dependable workhorse that’ll happily live on your K-mount body day in, day out.

Key Features

• Large F1.4 maximum aperture delivers bright viewing and shallow depth of field, ideal for low-light shooting and subject isolation.
• 50mm focal length on full-frame (approx. 76.5mm on APS-C) provides a natural perspective that excels for portraits, street and everyday photography.
• 15-element, 9-group optical design with aspherical and anomalous dispersion elements minimises aberrations for crisp, high-contrast images across the frame.
• Aero Bright Coating II, HD Coating and SP Coating reduce flare and ghosting while repelling water and grease, maintaining clarity in challenging lighting and weather.
• Rounded 9-blade diaphragm produces smooth, pleasing bokeh, enhancing background separation and rendering out-of-focus areas beautifully.
• SDM ultrasonic autofocus motor offers fast, quiet and precise focusing, supporting responsive shooting for stills and video.
• KAF4 mount with electromagnetic diaphragm control enables stable exposure during continuous shooting and movie recording on compatible Pentax DSLRs.
• All Weather (AW) construction with multiple seals protects against dust and moisture, making the lens reliable for outdoor use in harsh conditions.
• Quick-shift Focus System lets you instantly fine-tune focus manually after AF lock, improving control when working with demanding subjects.
• Robust build with a 72mm filter thread and included hood and case supports practical field use while keeping the lens protected during transport.