Sigma AF 15mm F2.8 EX Fisheye Lens
The Sigma AF 15mm f/2.8 is a 15mm f/2.8 lens designed for Canon EF, Nikon F, Sony A mount cameras. Used copies start from $202.3 on GearFocus, with buyer protection on every purchase.
Sigma AF 15mm F2.8 EX Fisheye Lens
Used Sigma AF 15mm f/2.8 Listings on GearFocus
Lens Overview — Sigma AF 15mm f/2.8
Key Features — Sigma AF 15mm f/2.8
15mm Full-Frame Fisheye: Fixed 15mm focal length covers full-frame sensors with a characteristic fisheye perspective, and also works across crop-sensor bodies in the same mount.
f/2.8 Maximum Aperture: Faster than many fisheye primes, f/2.8 allows shooting in lower-light conditions without relying solely on high ISO settings.
Diagonal Fisheye Design: Produces the strongly curved, wide-angle distortion characteristic of fisheye lenses, suited to creative, architectural, and action photography.
Autofocus Support: Built-in autofocus motor enables faster subject acquisition compared to manual-only fisheye alternatives.
Manual Focus Override: Full manual focus control is available for precise framing in situations where autofocus may hunt or struggle.
Three Mount Options: Available in Canon EF, Nikon F, and Sony A mounts, covering a wide range of DSLR camera systems.
Lens Specifications — Sigma AF 15mm f/2.8
| Spec | Detail |
|---|---|
| Use Cases | Creative Effects, Landscape, Architecture |
| Lens Type | Fisheye |
| Format | Full Frame |
| Zoom/Prime | Prime |
| Focal Length | 15mm |
| Maximum Aperture | f/2.8 |
| Camera System | DSLR |
| Lens Mount | Canon EF, Nikon F, Sony A |
| Autofocus | Yes |
| Focus Type | Auto, Manual |
| Image Stabilization | None |
| Weight | 370g |
Description — Sigma AF 15mm f/2.8
The Sigma AF 15mm f/2.8 EX Fisheye Lens is a prime fisheye lens designed for full-frame DSLR cameras. With a fixed 15mm focal length and a maximum aperture of f/2.8, it offers more light-gathering capability than many fisheye alternatives, making it well suited to a range of creative and demanding shooting conditions. The lens supports both autofocus and manual focus, providing operational flexibility across different shooting styles.
It is available in Canon EF, Nikon F, and Sony A mounts, covering a wide range of DSLR platforms. Weighing 370g, it maintains a manageable profile for a full-frame prime. Photographers should note that this lens includes no image stabilization and has no filter thread, so optical filter use will require alternative mounting solutions.
For DSLR shooters seeking a dedicated fisheye prime with a fast maximum aperture and broad mount compatibility, this Sigma lens covers the key bases clearly and practically.
Pros — Sigma AF 15mm f/2.8
- ✓Fast f/2.8 maximum aperture for a fisheye prime lens
- ✓Covers full-frame sensors, making it versatile across sensor sizes
- ✓Supports both autofocus and manual focus operation
Cons — Sigma AF 15mm f/2.8
- ✗No image stabilization, which can be a limitation in handheld low-light shooting
- ✗No filter thread, limiting the use of screw-on filters
- ✗Fixed 15mm focal length offers no zoom flexibility
Videos — Sigma AF 15mm f/2.8
Sigma 15mm f/2.8 'Fisheye' lens review with samples (Full-frame and APS-C) — Christopher Frost