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Rokinon 24mm F/1.4 Pentax Wide Angle Lens
Rokinon 24mm F/1.4 Pentax Wide Angle Lens
Rokinon 24mm F/1.4 Pentax Wide Angle Lens
Rokinon 24mm F/1.4 Pentax Wide Angle Lens
Rokinon 24mm F/1.4 Pentax Wide Angle Lens
Rokinon

Rokinon 24mm F/1.4 Pentax Wide Angle Lens

★★★★★4.4 (229 reviews)
F/1.4

Paint the Milky Way across a wide frame or open a cramped venue into a sweeping wide-angle composition — this fast 24mm f/1.4 brings serious low-light reach to your Pentax system at a price no first-party glass can match.

$549.00*
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*Price sourced from Amazon.com. Last updated:Jul 14, 2026.Price and availability are subject to change.

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Overview

For Pentax photographers who shoot after dark or in dim venues where light is genuinely scarce, the Rokinon 24mm F/1.4 opens creative territory that slower zooms and kit lenses simply cannot reach. An f/1.4 aperture on a 24mm is a combination purpose-built for astrophotography, low-light landscape work, and interior architecture — situations where you need to gather maximum photons without pushing ISO into visible noise territory. The 13-element, 12-group optical formula with two aspherical elements is designed to manage spherical aberration at the wide-open aperture, and the 84-degree angle of view frames expansive scenes with natural perspective and relatively modest distortion for a lens this fast.

This is a fully manual lens — aperture controlled via the barrel ring, focus confirmed visually through the viewfinder or live view magnification. For landscape, architecture, and night photography where you're working from a tripod with deliberate composition, the manual handling is entirely workable and some photographers prefer it for the intentionality it forces. For spontaneous or fast-moving subjects, the manual requirement demands practice and preparation. The 1-year Rokinon warranty and included accessories — removable hood, front and rear caps, lens pouch — are provided. No first-party Pentax 24mm fast prime exists at any price point; for Pentax system shooters who need f/1.4 at 24mm, the Rokinon is the practical answer.

Key Features

Aperture range of f/1.4 ~22; Manual Focus

Includes removable hood, front and rear lens caps, lens pouch, instruction manual and 1 year Rokinon warranty

Constructed of 13 elements in 12 groups (2 apspherical lenses)

84 degrees angle of view

Specifications

Aperture Range
f/1.4 ~22
Focus Type
Manual Focus
Elements
13 elements
Groups
12 groups
Aspherical Lenses
2
Angle of View
84 degrees

Pros & Cons

👍 Pros

  • At f/1.4 in low-light interiors or under night skies, this lens gathers significantly more light than standard f/2.8 zooms, allowing lower ISOs and cleaner files in the conditions that challenge every other lens in your bag
  • The 84-degree angle of view captures expansive interiors, environmental portraits, and sweeping landscapes in a single frame with natural perspective and moderate distortion for a fast wide prime
  • Two aspherical elements in the 13-element formula reduce spherical aberration that would otherwise degrade center sharpness at f/1.4 on a lens of this speed
  • For Pentax system users, this lens fills a fast wide-prime gap that no first-party manufacturer offers at anywhere near the Rokinon price point
  • The included removable hood, front and rear caps, and lens pouch make this a field-ready kit out of the box without additional purchases

👎 Cons

  • Manual focus only means no AF assist from the camera body — street photography, events, or any fast-moving scenario demands consistent manual focus discipline that adds difficulty under unpredictable conditions
  • Corner sharpness at f/1.4 and f/2 is visibly softer than the center — astrophotographers and landscape shooters who need uniform sharpness across stars or architectural lines must stop down, reducing the light advantage
  • No electronic coupling means aperture information is not recorded to EXIF data, complicating post-processing metadata sorting and preventing automatic lens correction profiles in Lightroom
  • On a Pentax APS-C body, the 24mm becomes approximately 36mm equivalent — the dramatic ultra-wide character that makes this focal length compelling is most fully realized on full-frame Pentax bodies
  • The Pentax-specific mount limits long-term versatility — if you change camera systems, this lens does not adapt cleanly to other mounts without optical penalties

Frequently Asked Questions

The Rokinon 24mm F/1.4 for Pentax is manual focus with aperture set via the lens barrel — there is no autofocus or electronic aperture coupling in this mount version, so focus confirmation is through the viewfinder or live view magnification.
The f/1.4 maximum aperture is the primary reason astrophotographers choose this lens — at f/1.4 to f/2 you can shoot the Milky Way at ISOs low enough to preserve shadow detail, while the 24mm angle of view captures wide swaths of sky in a single frame.
Very forgiving at working apertures — depth of field at f/8 and beyond on a 24mm is extensive enough to zone-focus without precision focus pulling. Landscapes and architecture are among the most practical manual-focus use cases for this lens.
At f/1.4, the two aspherical elements in the 13-element formula mitigate spherical aberration, but corner sharpness is typically best from f/2.8 onward. The wide-open aperture is primarily a light-gathering and creative separation tool — not the sharpest setting for flat-field technical work.
The filter thread diameter is not confirmed in the provided product documentation — verify with the retailer before purchasing if you plan to use existing filters from your kit, as filter thread size varies by lens version.

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