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Samyang SYIO18AF-E 18mm F2.8 AF Wide Angle Lens Sony E — main product image
Samyang SYIO18AF-E 18mm F2.8 AF Wide Angle Lens Sony E
Samyang SYIO18AF-E 18mm F2.8 AF Wide Angle Lens Sony E
Samyang SYIO18AF-E 18mm F2.8 AF Wide Angle Lens Sony E
Samyang SYIO18AF-E 18mm F2.8 AF Wide Angle Lens Sony E
Samyang SYIO18AF-E 18mm F2.8 AF Wide Angle Lens Sony E
Samyang SYIO18AF-E 18mm F2.8 AF Wide Angle Lens Sony E
Samyang

Samyang SYIO18AF-E 18mm F2.8 AF Wide Angle Lens Sony E

Ultra-compact 18mm f/2.8 autofocus wide-angle lens built for Sony E-mount full-frame shooters.

$269.10*$299.00Save 10%
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*Price sourced from Amazon.com. Last updated:Aug 28, 2026.Price and availability are subject to change — details.

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Overview

The Samyang SYIO18AF-E 18mm f/2.8 AF is a full-frame wide-angle prime lens designed specifically for Sony's E-mount mirrorless system. Its ultra-wide 18mm focal length makes it a natural fit for landscape photography, real estate interiors, architectural work, and travel shooting where you want to capture as much of a scene as possible. The f/2.8 maximum aperture keeps the lens compact while still offering enough light-gathering ability for handheld shooting in dimmer conditions, and it pairs with Sony's in-body stabilization to further extend usable shutter speeds.

One of the standout qualities of this lens is its size and weight — it is noticeably smaller and lighter than most full-frame 18mm alternatives, making it an excellent walk-around option. The autofocus system communicates directly with Sony bodies, supporting features like Eye AF and continuous tracking. While the lens does not include weather sealing or built-in stabilization, and corner performance wide open is not as razor-sharp as more expensive alternatives, it delivers impressive value for photographers who want an affordable, pocketable ultra-wide prime with reliable autofocus.

Key Features

SUPER-WIDE FIELD OF VIEW: Crisp 100.1° angle on full-frame and 76.2° on APS-C sensors—perfect for interiors, landscapes, and tight spaces. Delivers expansive compositions without distortion in a tiny, travel-ready design.

LIGHTWEIGHT & ULTRA COMPACT: Weighing only 145g and measuring under 2", this full-frame lens slips easily into your pocket or camera bag. Ideal for creators who need portability without sacrificing image fidelity.

ADVANCED OPTICS FOR SHARP IMAGERY: Engineered with 8 specialized lens elements—3 ED, 3 ASP, and 2 HR—for stunning sharpness, contrast, and minimal chromatic aberration. Professional image quality in a truly compact form.

SILENT & ACCURATE AUTOFOCUS: The internal focusing STM motor delivers fast, precise, and whisper-quiet autofocus—perfect for vlogging, street photography, or discreet event coverage without disrupting your audio.

BUILT TO LAST, READY TO GO: Features a durable metal mount with strengthened composite housing. Includes lens caps, hood, case, and manual—everything needed for travel, adventure, and daily photo shoots.

Specifications

Brand
Samyang
Model
SYIO18AF-E
Focal Length
18mm
Maximum Aperture
f/2.8
Lens Mount
Sony E
Format Compatibility
Full Frame
Focus Type
Autofocus (AF)

Frequently Asked Questions

Yes, the Samyang 18mm f/2.8 AF uses the Sony E mount, so it works on both full-frame and APS-C Sony mirrorless bodies, though on APS-C the effective field of view is equivalent to approximately 27mm.
Samyang does not list weather sealing for the SYIO18AF-E, so it is best to avoid prolonged use in rain or dusty environments without protection.
The Samyang 18mm f/2.8 AF has a minimum focusing distance of approximately 0.25m (about 10 inches), which is reasonably close for a wide-angle prime.
No, there is no optical stabilization built into this lens. However, it can take advantage of in-body image stabilization (IBIS) on compatible Sony camera bodies.
The Samyang 18mm f/2.8 AF uses a 58mm filter thread.

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