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 Alliance, Sony E mount cameras. Check GearFocus for current availability, with buyer protection on every purchase.
Sigma 45mm F2.8 DG DN Contemporary Lens
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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 Alliance, 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