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Sigma 18-50mm F2.8 DC DN Contemporary Lens for for Mirrorless Cameras, L-Mount, Ideal for Portraits

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Key Features
- Constant f/2.8 Aperture: Bright, consistent exposure and smooth background separation.
- Ultra Compact Design: Sub-300 g weight, easy to carry for travel and gimbal use.
- Close-Focus 1:2.8 Magnification: Shoot detailed close-ups without a dedicated macro lens.
- Stepping AF Motor: Quiet, smooth autofocus ideal for run-and-gun video.
- Advanced Optics: 13 elements, 10 groups with aspherical and SLD elements for sharpness control.
- Durable Build: Thermally Stable Composite barrel, brass bayonet for precise mount fit.
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Sigma 18-50mm F2.8 DC DN Contemporary Lens for for Mirrorless Cameras, L-Mount, Ideal for Portraits Overview
Description
The Sigma 18-50 mm F2.8 DC DN | Contemporary (L-Mount) is a compact, constant f/2.8 standard zoom for APS-C mirrorless cameras, delivering a 27–75 mm full-frame equivalent range in a travel-friendly form factor. At approximately 290 g, it balances bright optics with exceptional portability, making it ideal for hybrid shooters who want one high-quality lens for stills and video.
Designed with 13 elements in 10 groups including three aspherical elements and one SLD element, this lens offers sharp edge-to-edge performance, a close focusing distance for near-macro work, and a near-silent stepping AF motor for smooth video operation. It ships with a dedicated hood and lens caps for immediate use out of the box.
The Sigma 18-50 mm F2.8 DC DN | Contemporary is an APS-C standard zoom that delivers pro-level performance in a compact package, ideal for travel, street, portrait, and hybrid video use.
Problem
Photographers and creators often compromise between aperture and portability, carrying heavier full-frame zooms or slower kit lenses. This lens solves that tradeoff by offering constant f/2.8 brightness in a genuinely compact form.
- Need for low-light, shallow depth-of-field shooting without heavy gear.
- Desire for quiet AF during handheld video and vlogging.
- Wanting close-up capability without an extra macro lens.
Solution
By combining a constant f/2.8 aperture, compact weight, and near-macro capability, this lens replaces multiple kit lenses for travel and hybrid creators, simplifying kits while expanding creative options for low light and close-up work.
Benefits
- Portability: Carry one bright zoom instead of multiple lenses, reduce fatigue on long shoots.
- Low-Light Performance: Constant f/2.8 enables faster shutter speeds and lower ISO in dim venues.
- Video Friendly: Quiet AF and compact size suit gimbals and run-and-gun setups.
- Macro-Like Closeups: High magnification at the wide end reduces the need for a separate macro lens.
Applications
- Travel and street photography
- Vlogging and one-operator video
- Product, food and close-up photography
Why Choose
- True constant f/2.8 brightness in a sub-300 g package, with near-macro capability and modern AF suited for hybrid creators.
Specifications
| Model Name / Number | Sigma 18-50 mm F2.8 DC DN | Contemporary, C021 |
| Release Year | 2021 |
| Lens Type | Zoom, Standard |
| Intended Use | Photography, Video |
| Color / Finish | Black |
| Weather Sealing | No |
| Dimensions (Diameter Length) | 65.4 mm 74.5 mm |
| Weight | 290 g |
| Mount Type | L-Mount (Leica L / L-Mount Alliance) |
| Compatible Sensor Size | APS-C (DC) |
| Supported Camera Brands / Systems | Leica, Panasonic, Sigma (L-Mount bodies) |
| Coverage | APS-C |
| Focal Length (Zoom Range) | 18-50 mm (27-75 mm 35mm equivalent) |
| Maximum Aperture | f/2.8 (constant) |
| Minimum Aperture | f/22 |
| Aperture Type | Rounded, 7 blades |
| Optical Construction (Elements / Groups) | 13 elements in 10 groups |
| Special Elements | 3 aspherical, 1 SLD |
| Coatings | Multi-layer coatings |
| Focus Type | Autofocus, Manual focus |
| Autofocus Motor Type | Stepper motor |
| Focus Modes | AF-S, AF-C, MF (camera dependent) |
| Minimum Focus Distance | 12.1 cm (wide) 30 cm (tele) |
| Maximum Magnification Ratio | 1:2.8 (wide) 1:5 (tele) |
| Internal Focusing | Yes |
| Full-Time Manual Override | Yes |
| Filter Thread Size (mm) | f55 mm |
| Front Element Rotation | No |
| Compatible Lens Hood Model | LH582-02 |
| Diaphragm Blades | 7, rounded |
| Edition Number | C021 |
| Supplied Accessories | Lens hood LH582-02, front cap LCF-55mm III, rear cap LCR II |
| Dimensions (W H D) | 65.4 mm 74.5 mm |
| Weight | 290 g |
| Brand | Sigma Corporation |
| Manufacturer SKU | 585969 |
| UPC | 00-85126-58569-3 |
What’s included
- 1- 18-50mm F2.8 DC DN Contemporary Lens, L-Mount
- 1- Lens Hood - LH582-02
- 1- Front Cap - LCF-55mm III
- 1- Rear Cap - LCR II
Compatibility
| Leica CL | Leica TL2 | Panasonic Lumix G (L-mount compatible bodies) | Sigma fp (L-Mount) | Panasonic Lumix S5 (APS-C crop mode) |
| Leica SL (crop mode) | Panasonic Lumix S1 (crop mode) | Leica TL | Sigma fp L (crop mode) | Other L-Mount APS-C capable bodies |
FAQ
Is this lens compatible with full-frame L-Mount cameras?
This lens is designed for APS-C (DC) sensors, it will mount on full-frame L-Mount bodies but will operate in crop mode, or vignette if used full-frame.
What is the close focusing distance and magnification?
Minimum focusing distance is 12.1 cm at the wide end, with a maximum magnification of 1:2.8 at wide, enabling near-macro close-ups.
Does the lens have image stabilization?
The Sigma 18-50 mm F2.8 DC DN does not include optical image stabilization, rely on camera body stabilization where available.
Is autofocus quiet enough for video?
Yes, the lens uses a stepping AF motor optimized for near-silent operation, suitable for run-and-gun video and vlogging.
What filter size does this lens use?
The lens accepts f55 mm screw-in filters, compatible with common ND and polarizing filters.
What accessories are supplied in the box?
The lens ships with the LH582-02 hood, LCF-55mm III front cap, and LCR II rear cap.
How much does the lens weigh?
The L-Mount version weighs approximately 290 g, making it highly portable for travel and gimbal use.
Can I use this lens for portrait photography?
Yes, the 1850 mm range (2775 mm equiv.) and constant f/2.8 provide flattering portrait options with controlled background separation.
Which mounts are available for this model?
The Sigma 18-50 mm F2.8 DC DN is available in multiple mounts, including L-Mount, Sony E, Fujifilm X, and Canon RF; this listing is for the L-Mount variant.
What is the warranty and service information?
Warranty and service terms vary by region and retailer; check Sigma or your local 17th Street terms for details.
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