Sigma 45mm F2.8 DG DN Contemporary Lens
The Sigma 45mm f/2.8 DG DN is a 45mm f/2.8 lens designed for L-Mount, Sony E mount cameras. Used copies start from $353.94 on GearFocus, with buyer protection on every purchase.
Sigma 45mm F2.8 DG DN Contemporary Lens
Used Sigma 45mm f/2.8 DG DN Listings on GearFocus
Lens Overview — Sigma 45mm f/2.8 DG DN
Key Features — Sigma 45mm f/2.8 DG DN
45mm Full-Frame Prime: A standard focal length that delivers a natural, versatile perspective well-suited to street, travel, and everyday photography on full-frame mirrorless bodies.
f/2.8 Maximum Aperture: Provides meaningful background separation and workable low-light performance while keeping the lens compact and lightweight.
215g Compact Build: Exceptionally light for a full-frame prime, making it practical for all-day handheld shooting without adding significant weight to a mirrorless kit.
L-Mount & Sony E Mount: Available in both mount options, covering major mirrorless ecosystems including Leica, Panasonic, Sigma, and Sony full-frame bodies.
Autofocus & Manual Focus: Supports both AF and MF operation, giving shooters the flexibility to switch between modes depending on the situation.
Full-Frame Image Circle: Covers the full 35mm frame with no vignetting, and is equally usable on APS-C mirrorless bodies in the same mount family.
Lens Specifications — Sigma 45mm f/2.8 DG DN
| Spec | Detail |
|---|---|
| Use Cases | Travel |
| Lens Type | Prime |
| Format | Full Frame |
| Zoom/Prime | Prime |
| Focal Length | 45mm |
| Maximum Aperture | f/2.8 |
| Camera System | Mirrorless |
| Lens Mount | L-Mount, Sony E |
| Autofocus | Yes |
| Focus Type | Auto, Manual |
| Image Stabilization | None |
| Filter Thread | 55mm |
Description — Sigma 45mm f/2.8 DG DN
The Sigma 45mm f/2.8 DG DN Contemporary is a prime lens designed specifically for mirrorless camera systems, available in L-Mount and Sony E mount variants. It covers a full-frame image circle and features a 45mm focal length — a natural, slightly wide standard perspective that works well across portraiture, travel, and everyday photography. The maximum aperture of f/2.8 allows for meaningful subject separation from the background while keeping the lens compact and lightweight at just 215g.
That weight makes a real difference during extended shoots or when building a travel-friendly kit. The 55mm filter thread is a practical, widely supported size, keeping the cost of accessories like ND and polarizing filters reasonable. Both autofocus and manual focus are supported, giving you control over how you engage with a scene.
There is no image stabilization built into the lens, so shooters who need stabilization should confirm their camera body provides it. As a full-frame lens on any compatible APS-C body, the image circle provides complete coverage with no vignetting.
Pros — Sigma 45mm f/2.8 DG DN
- ✓Lightweight 215g body makes it highly portable for a full-frame prime lens
- ✓Available in both L-Mount and Sony E mount, covering two major mirrorless ecosystems
- ✓45mm focal length offers a versatile standard-prime perspective on full-frame
Cons — Sigma 45mm f/2.8 DG DN
- ✗No image stabilization, so stabilization depends entirely on in-body systems
- ✗f/2.8 maximum aperture is modest compared to faster 45mm or 50mm primes
- ✗Prime design means no focal length flexibility — you zoom with your feet
Reviews — Sigma 45mm f/2.8 DG DN
Videos — Sigma 45mm f/2.8 DG DN
Sigma 45mm f/2.8 DG DN 'C' lens review with samples (Full-frame & APS-C) — Christopher Frost
Frequently Asked Questions — Sigma 45mm f/2.8 DG DN
Which camera mounts is this lens compatible with?+
The Sigma 45mm f/2.8 DG DN Contemporary is available in L-Mount and Sony E mount versions. This covers a range of full-frame and APS-C mirrorless camera bodies across those two systems. Make sure to select the correct mount version for your camera.
Does this lens have image stabilization?+
No, the lens does not include image stabilization. If you need stabilization, you will need to rely on your camera body's in-body image stabilization system if it has one.
What sensor sizes does this lens support?+
The lens is designed for full-frame mirrorless cameras, as indicated by its full-frame lens format designation. It can also be used on APS-C bodies with compatible mounts without any vignetting at the full-frame image circle.
What filter size does this lens use?+
The Sigma 45mm f/2.8 DG DN Contemporary uses a 55mm filter thread, which is a common and widely available size for polarizers, ND filters, and other accessories.
How heavy is this lens?+
The lens weighs 215g, making it one of the more compact and lightweight options in the full-frame mirrorless prime category. This makes it well-suited for travel, street, or all-day shooting where minimizing kit weight is a priority.
Is this lens a zoom or a prime?+
This is a prime lens with a fixed 45mm focal length. There is no zoom capability, so framing requires physically moving relative to your subject. The fixed focal length is often associated with simpler optical designs and consistent maximum aperture.