Sirui

Sirui 16AS12E-B-AM 16mm F1.2 APS-C E-Mount Lens

4.6 (46 reviews)
f/1.2

SIRUI's 16mm F1.2 autofocus lens delivers fast, wide-angle shooting in a lightweight carbon fiber body for Sony E-mount APS-C cameras.

$319.00*
In Stock on Amazon.com
View on Amazon

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

Affiliate Disclosure: Studio Supplies may earn a commission from qualifying purchases made through links on this page, at no additional cost to you. This helps support our editorial team.

Notice a mistake? Let Us Know

Overview

The SIRUI Sniper 16mm F1.2 Autofocus Lens is the wide-angle entry in SIRUI's budget-friendly F1.2 APS-C lens lineup for Sony E-mount cameras. At 16mm on an APS-C sensor—equivalent to roughly 24mm full-frame—it hits the sweet spot for landscape photography, architectural work, environmental portraits, and street shooting where you want to include more of the scene. The F1.2 maximum aperture is the standout specification, pulling in substantially more light than typical kit lenses and producing a creamy, pronounced bokeh that is unusual at this focal length and price range. A 13-blade aperture diaphragm contributes to smooth, rounded out-of-focus highlights.

Optically, the lens uses 14 elements in 5 groups, incorporating ED glass and high refractive index elements to minimize chromatic aberration and ghosting, while two aspherical elements help control distortion and keep the overall barrel length compact. The STM stepping motor delivers autofocus that is both fast and quiet, with support for eye detection and object tracking autofocus modes. Build quality centers on a carbon fiber body that brings the weight down to approximately 380g—light enough for extended handheld shooting or gimbal use without heavy counterweighting. Combined with the existing 23mm, 33mm, 56mm, and 75mm Sniper lenses, this 16mm completes a versatile, affordable prime lens set for APS-C filmmakers and photographers.

Key Features

As budget-friendly f/1.2 autofocus APS-C lenses, the addition of the 16mm wide-angle and 75mm telephoto lenses complements existing 23mm, 33mm, and 56mm sniper series lenses, allowing filmmakers to unleash their creativity with a full set ready.

16mm Wide-Angle: The 16mm focal length offers a dynamic wide-angle perspective, allowing for more of the scene to be included in the frame, making it ideal for capturing expansive landscapes, immersive architectural shots, and impactful street photography.

Swift & Silent Auto-Focus: Equipped with STM (stepping) focus motors, the auto-focus system supports eye AF and object tracking, ensuring photographers capture sharp, clear images swiftly without disturbing the scene.

Outstanding Optical Performance: ED glass and high refractive index glass are added to deliver unmatched sharpness and clarity across the entire frame while reducing ghosting and lens flare. Two aspherical lenses are added to 16mm lens to reduce lens size. Also, distortion and optical aberration are well controlled.

Premium lens Body - The strong carbon fiber body makes it sturdy and portable in hand. It helps to protect inner optical elements while the minimum weight of each single lens is around only 380g, creating a new era of lightweight fast aperture lens.

F1.2 Large Aperture - Featuring large F1.2 aperture, this sniper lens ensures a large amount of light throughput even when shooting in dark, extremely shallow DOF, and amazing bokeh function to highlight the main topic.

Specifications

Brand
SIRUI
Model
16AS12E-B-AM
Focal Length
16mm
Maximum Aperture
F1.2
Minimum Aperture
F16
Lens Mount
Sony E-Mount
Format
APS-C
Focus Type
Autofocus (STM Motor)
Lens Construction
14 Elements in 5 Groups
Aperture Blades
13
Minimum Focus Distance
0.3m
Filter Thread
M58×0.75
Body Material
Carbon Fiber
Weight
~380g

Pros & Cons

👍 Pros

  • F1.2 maximum aperture allows exceptional low-light performance and extremely shallow depth of field
  • Carbon fiber body keeps the weight around 380g, making it unusually light for a fast wide-angle lens
  • STM autofocus motor operates quietly and supports eye AF and subject tracking
  • 14 elements in 5 groups with ED glass and aspherical elements deliver strong sharpness with controlled aberrations

👎 Cons

  • APS-C only coverage limits usability if you upgrade to a full-frame body in the future
  • No optical image stabilization, which can matter at wider apertures in low light when handheld
  • At 0.3m minimum focus distance, it is not ideal for close-up or macro-style wide-angle work
  • As a third-party lens, autofocus compatibility with future camera firmware updates is not guaranteed

Frequently Asked Questions

It is designed for APS-C sensor cameras. While it can physically mount on a full-frame Sony E-mount body, the image circle is optimized for APS-C and will produce heavy vignetting unless the camera is set to APS-C crop mode.
On a Sony APS-C body with its 1.5x crop factor, the 16mm focal length provides a field of view equivalent to approximately 24mm on a full-frame camera.
The STM stepping motor is designed to be smooth and quiet during focusing, making it well-suited for video recording where audible focus noise would be a problem. It also supports eye AF and object tracking.
No, the lens does not include optical image stabilization. You would need to rely on your camera's in-body stabilization or use external stabilization for handheld shooting.
It accepts 58mm threaded filters (M58×0.75).