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Sigma 18-50mm F2.8 DC DN Contemporary Lens for Mirrorless Cameras, FUJIFILM X Mount, APS-C Sensors
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SKU
SIG585975
$659.00
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Key Features
- Constant f/2.8 Maximum Aperture: Enables consistent exposure and better low-light performance across the zoom range.
- Compact, Lightweight Body: 285 g weight makes it a natural fit for mirrorless travel and handheld video setups.
- 13 Elements in 10 Groups: Includes SLD and aspherical elements to reduce aberration and maintain sharpness.
- Minimum Focus Distance 12.1 cm: Close-focusing offers near-macro capability for small subjects and detail shots.
- Stepping Motor (STM) AF: Fast and quiet autofocus suitable for both stills and video.
- Rounded 7-Blade Diaphragm: Smooth bokeh for subject separation and pleasing background rendering.
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Sigma 18-50mm F2.8 DC DN Contemporary Lens for Mirrorless Cameras, FUJIFILM X Mount, APS-C Sensors Overview
Description
The Sigma 18-50 mm F2.8 DC DN | Contemporary for FUJIFILM X-Mount is a compact, constant-aperture standard zoom designed for APS-C mirrorless systems. It delivers a 27–75 mm full-frame equivalent range, a bright f/2.8 throughout the zoom, and a lightweight form factor ideal for travel and hybrid shooters. The lens balances high optical performance with portability to provide a versatile walk-around option for landscapes, portraits, street, and video.
Applications
- Travel photography, where size and weight matter.
- Street and documentary, for discreet, fast handling and low-light capability.
- Vlogging and handheld video, using quiet STM AF and low weight.
Why Choose This Lens
- Best portability to performance ratio in the constant f/2.8 APS-C zoom class.
- Near-macro 1:2.8 capability at the wide end adds creative flexibility.
- Affordable mid-range pricing with Sigma optical quality and manufacturing consistency.
Specifications
| Brand / Manufacturer | Sigma Corporation |
| Model Name / Number | 18-50 mm F2.8 DC DN, SKU 585975 |
| Lens Type | Standard Zoom |
| Intended Use | Photography, Video |
| Color / Finish | Black |
| Weather Sealing | No |
| Dimensions (Diameter Length) | f61.6 mm 76.8 mm |
| Weight | 285 g |
| Mount Type | FUJIFILM X |
| Compatible Sensor Size | APS-C (DC) |
| Supported Camera Brands / Systems | Fujifilm X-series APS-C |
| Coverage | APS-C |
| Focal Length | 1850 mm (2775 mm equivalent) |
| Maximum Aperture | f/2.8 |
| Minimum Aperture | f/22 |
| Aperture Type | Rounded, 7 blades |
| Optical Construction | 13 elements / 10 groups (1 SLD, 3 aspherical) |
| Coatings | Multi-coatings to reduce flare and ghosting |
| Focus Type | Autofocus with manual override |
| Autofocus Motor Type | Stepping motor (STM) |
| Focus Modes | AF-S, AF-C, MF |
| Minimum Focus Distance | 12.1 cm (wide) 30 cm (tele) |
| Maximum Magnification Ratio | 0.36 (1:2.8) |
| Internal Focusing | Yes |
| Filter Thread Size (mm) | 55 mm |
| Compatible Lens Hood Model | LH582-02 (petal) |
| UPC | 00-85126-58575-4 |
| Manufacturer SKU | 585975 |
What’s included
- 1- 18-50mm F2.8 DC DN Contemporary Lens, FUJIFILM X Mount
- 1- Lens Hood LH582-02
- 1- Front Cap LCF-55mm III
- 1- Rear Cap LCR II
Compatibility
| FUJIFILM X-H2 | FUJIFILM X-T5 | FUJIFILM X-S20 | FUJIFILM X-E4 | FUJIFILM X-T30 II |
| FUJIFILM X-Pro3 | FUJIFILM X-A7 | FUJIFILM X-T4 | FUJIFILM X-T3 | FUJIFILM X-S10 |
FAQ
Is the Sigma 18-50mm f/2.8 compatible with Fujifilm X-mount cameras?
Yes, this SKU is the FUJIFILM X-Mount version and is fully compatible with Fujifilm X-series APS-C mirrorless cameras, supporting AF and exposure functions.
Does the Sigma 18-50mm have image stabilization?
No, the lens does not include optical image stabilization. Pair with bodies that include IBIS for improved handheld stability.
Is the maximum aperture constant across the zoom range?
Yes, the lens maintains a constant maximum aperture of f/2.8 throughout the 1850 mm range.
How close can the lens focus?
The minimum focusing distance is 12.1 cm at the wide end and 30 cm at the tele end, allowing near-macro framing and high magnification up to 0.36.
What filter size does the lens use?
The lens accepts 55 mm front filters, a common size that keeps accessory costs low.
What is included in the box?
The package includes the LH582-02 lens hood, LCF-55 III front cap, and LCR II rear cap.
Is this lens weather-sealed?
No, the lens is not weather-sealed. It is optimized for lightness and compactness rather than heavy-duty environmental sealing.
How does autofocus perform for video?
The stepping motor (STM) autofocus offers quiet and smooth operation, making it well suited for hybrid shooters capturing both stills and video.
How does this compare to Fujifilm's XF 16-55mm f/2.8?
The Sigma 18-50 mm is significantly lighter and more compact, offering a similar constant f/2.8 aperture at a lower price point, though the Fujifilm XF 16-55 mm is larger and may offer different optical characteristics and closer integration with native XF series ergonomics.
What is the UPC and Manufacturer SKU?
UPC: 00-85126-58575-4, Manufacturer SKU: 585975.
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