Samyang AF 18mm f/2.8
The Samyang 18mm f/2.8 is a 18mm f/2.8 lens designed for Sony E mount cameras. Check GearFocus for current availability, with buyer protection on every purchase.

Samyang AF 18mm f/2.8
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Lens Overview — Samyang 18mm f/2.8
Key Features — Samyang 18mm f/2.8
18mm Full-Frame Prime: Covers the full 35mm image circle on Sony E-mount cameras, delivering a broad 100-degree field of view suited to landscapes, interiors, and architecture.
f/2.8 Maximum Aperture: Allows meaningful light gathering in low-light environments and provides some background separation at a wide focal length.
Sony E-Mount Autofocus: Native Sony E-mount design enables autofocus compatibility with supported Sony mirrorless bodies alongside manual focus operation.
145g Compact Build: One of the lightest full-frame wide-angle primes available for Sony E-mount, making it well suited to travel and lightweight kit setups.
58mm Filter Thread: A common filter diameter that makes it straightforward to pair with polarizers, ND filters, and other standard accessories.
No Image Stabilization: Relies on the camera body's in-body stabilization system for handheld shooting in low light.
Lens Specifications — Samyang 18mm f/2.8
| Spec | Detail |
|---|---|
| Use Cases | Landscape, Travel, Architecture, Street |
| Lens Type | Prime |
| Format | Full Frame |
| Zoom/Prime | Prime |
| Focal Length | 18mm |
| Maximum Aperture | f/2.8 |
| Camera System | Mirrorless |
| Lens Mount | Sony E |
| Autofocus | Yes |
| Focus Type | Auto, Manual |
| Image Stabilization | None |
| Filter Thread | 58mm |
Description — Samyang 18mm f/2.8
The Samyang AF 18mm f/2.8 is a full-frame wide-angle prime lens designed for Sony E-mount mirrorless cameras. With a fixed 18mm focal length and a maximum aperture of f/2.8, it is well-suited to wide-field photography where both angle of view and light-gathering matter. The lens supports both autofocus and manual focus, providing versatility for different shooting styles and subjects.
Weighing just 145g, it is a notably compact and portable option for a full-frame wide-angle prime, ideal for photographers who prioritize a lightweight kit. The 58mm filter thread makes it straightforward to use with popular filter systems. It is worth noting that this lens has no image stabilization, so users should plan accordingly when shooting handheld in dim conditions.
As a prime lens in the wide-angle focal length range, it offers a single-minded optical design focused on the 18mm perspective rather than zoom versatility.
Pros — Samyang 18mm f/2.8
- ✓Very lightweight at 145g, making it easy to carry on extended shoots
- ✓Maximum aperture of f/2.8 provides solid light-gathering for a wide-angle prime
- ✓Supports both autofocus and manual focus for flexible operation
Cons — Samyang 18mm f/2.8
- ✗No image stabilization, which can be limiting in low-light handheld situations
- ✗Single fixed focal length at 18mm offers no zoom flexibility
- ✗Compatible only with Sony E-mount — no other mount options listed in specifications
Videos — Samyang 18mm f/2.8
Samyang AF 18mm f/2.8 FE lens review with samples (Full-frame & APS-C) — Christopher Frost
Frequently Asked Questions — Samyang 18mm f/2.8
What camera mount does this lens fit?+
The Samyang AF 18mm f/2.8 is designed for the Sony E-mount. It is built for mirrorless camera systems and is not compatible with DSLR or other mirrorless mounts.
Does this lens support autofocus?+
Yes, the lens supports autofocus as well as manual focus. Both focus modes are available depending on your shooting preference or camera settings.
Will this lens cover a full-frame sensor?+
Yes, the Samyang AF 18mm f/2.8 is specified as a full-frame lens, meaning it is designed to provide complete coverage for full-frame Sony E-mount camera bodies.
How heavy is this lens?+
The lens weighs 145g, making it one of the lighter options in the wide-angle prime category for Sony E-mount full-frame cameras.
What filter size does this lens use?+
The Samyang AF 18mm f/2.8 has a 58mm filter thread, which is a common size compatible with a wide range of standard photographic filters.
Does the lens have image stabilization?+
No, the specifications confirm that image stabilization is not present on this lens. Shooters who need stabilization when handholding at slower shutter speeds will need to rely on any in-body stabilization their camera may offer.