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Sheffield (Store)

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112-114 London Rd
Highfield
Sheffield
S2 4LR
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Chesterfield (Warehouse)

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Thornfield House
Dunston Road
Chesterfield
S41 9QD
Monday to Friday 9am - 5pm Saturday Closed Sunday Closed
Sigma 18-50mm F2.8 L-Mount Lens C DC DN Image 1

Sigma 18-50mm F2.8 DC DN Contemporary Lens for L-Mount

Our Price: £423.00

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Sigma 18-50mm F2.8 L-Mount Lens C DC DN Image 1

Sigma 18-50mm F2.8 DC DN Contemporary Lens for L-Mount

Our Price:

£423.00

WAS: £468.00
2 in stock
📍 Check Click & Collect availability
Product Code: 585969 Barcode: 85126585693

Current Promotions

🎁Sigma 65th Anniversary Year Instant Save1 Oct 2026 – 30 Nov 2026

Sigma 65th Anniversary Instant Save - special price available from 1st October to 30th November 2026

  • 27-75mm equivalent APS-C standard zoom for L-Mount
  • Constant F2.8 aperture
  • 290g, a natural match for the Sigma fp and BF
  • Uses APS-C crop mode on full-frame L-Mount bodies
  • Focuses to 12.1cm for 1:2.8 close-ups
  • Quiet stepping motor autofocus
  • 55mm filter thread, petal hood included

The Sigma 18-50mm F2.8 DC DN Contemporary for L-Mount is an APS-C standard zoom that turns a full-frame L-Mount camera into a very small walkaround setup. It gives a 27-75mm equivalent view, a constant F2.8 aperture and weighs 290g. It is aimed at Sigma fp and BF owners, and at Leica CL and TL2 users, who want one light lens for everyday shooting.

Sigma 18-50mm F2.8 DC DN for L-Mount lens optics

Image quality

Its 13 elements in 10 groups include one SLD and three aspherical elements, which keep colour fringing and distortion low through the zoom range. Super Multi-Layer Coating helps it hold contrast against bright light, and a petal hood is supplied. Seven rounded aperture blades give smooth background blur at F2.8.
Sigma 18-50mm F2.8 DC DN for L-Mount autofocus

Autofocus and video

A stepping motor provides quiet, fast autofocus that suits video as well as stills. The internal focusing design means the lens stays the same length while it focuses, and it is supported by in-camera lens corrections.
Sigma 18-50mm F2.8 DC DN for L-Mount close-up shooting

Close-up shooting

At 18mm it focuses to 12.1cm for a 1:2.8 magnification ratio, close enough for details, food and small objects without a dedicated macro lens. At 50mm the closest focus is 30cm.
Sigma 18-50mm F2.8 DC DN for L-Mount lens barrel

Build

Sigma's Thermally Stable Composite barrel keeps the weight down and the brass mount is sealed with rubber against dust and splashes. The lens measures 65.4 x 74.5mm and takes 55mm filters.
Sigma 18-50mm F2.8 DC DN for L-Mount on camera

Who it's for

Because this is an APS-C lens, full-frame L-Mount bodies such as the Lumix S5II, Sigma fp and Sigma BF switch to APS-C crop mode when it is fitted, which brings a 24MP camera down to roughly 10MP. That is plenty for web use and small prints, and it gives you one of the smallest bright zooms on the system. Leica CL and TL2 owners use the full sensor. If you want full-frame coverage, look at the Sigma 28-70mm F2.8 DG DN instead. For a much longer range on APS-C, the Sigma 16-300mm F3.5-6.7 covers wide to super telephoto, and the Sigma 17-40mm F1.8 DC Art is the brighter choice.

Also available for Sony E, Canon RF and Fujifilm X.

MountL-Mount
FormatAPS-C
Focal length18-50mm (27-75mm full frame equivalent)
Maximum apertureF2.8
Minimum apertureF22
Lens construction13 elements in 10 groups (1 SLD, 3 aspherical)
Angle of view76.5° to 31.7°
Aperture blades7 (rounded diaphragm)
Minimum focusing distance12.1cm (wide) to 30cm (tele)
Maximum magnification1:2.8 (wide) to 1:5 (tele)
Filter size55mm
Autofocus motorStepping motor
Optical stabilisationNo
Dimensions (diameter x length)65.4 x 74.5mm
Weight290g
Supplied accessoriesLens hood LH582-02, front cap LCF-55mm III, rear cap LCR II

Sheffield Store

Monday to Saturday 10am - 6pm

Harrison Cameras, 112-114 London Road, Sheffield, S2 4LR

Free UK Delivery

Free standard delivery to UK Mainland on all orders over £50

DPD Next Working Day and Saturday delivery also available when ordered before 2pm Mon-Fri

Sell or Part-Exchange

Have equipment to trade in? We want your old cameras, lenses and accessories. Part-exchange against a new camera, or sell your gear and get paid by secure bank transfer

Get an instant quote online now!

Frequently asked questions

Can I use the Sigma 18-50mm F2.8 on a full-frame L-Mount camera?

Yes. The Lumix S5II, Sigma fp, Sigma BF and Leica SL cameras switch to APS-C crop mode with it, so a 24MP camera records at roughly 10MP. Leica CL and TL2 bodies, which are APS-C, use their full sensor.

What is the Sigma 18-50mm F2.8 equivalent to on L-Mount?

In APS-C mode it gives a 27-75mm full-frame equivalent view.

Is the Sigma 18-50mm F2.8 a good lens for the Sigma BF or fp?

It is one of the smallest bright zooms you can fit, and at 290g it keeps the camera small. The trade-off is the APS-C crop, so if you need the full resolution, a full-frame lens such as the Sigma 28-70mm F2.8 DG DN is the better match.

Does the Sigma 18-50mm F2.8 L-Mount have image stabilisation?

No. On the Lumix S5II the camera's in-body stabilisation steadies it. The Sigma fp and BF have no in-body stabilisation, so use a sensible shutter speed or the camera's electronic stabilisation for video.

Sigma 18-50mm F2.8 or Sigma 17-40mm F1.8 Art for L-Mount?

The 17-40mm is over a stop brighter but weighs 535g and is 115.9mm long. The 18-50mm is the choice if size is the priority.

What filter size does the Sigma 18-50mm F2.8 L-Mount take?

55mm.

Is the Sigma 18-50mm F2.8 L-Mount weather sealed?

The mount has a rubber seal against dust and splashes. It is not sealed throughout, so take care in heavy rain.

What comes in the box with the Sigma 18-50mm F2.8 L-Mount?

The LH582-02 petal hood, front cap and rear cap.

How it compares

Sigma 18-50mm F2.8 DC DN Contemporary (L-Mount) Sigma 17-40mm F1.8 DC Art (L-Mount)Sigma 16-300mm F3.5-6.7 DC OS Contemporary (L-Mount)
MountL-MountL-MountL-Mount
Focal length18-50mm17-40mm16-300mm
Maximum apertureF2.8 (constant)F1.8 (constant)F3.5-6.7 (variable)
Closest focus12.1cm (18mm) / 30cm (50mm)28cm17cm (16mm) / 105cm (300mm)
Maximum magnification1:2.8 (18mm) / 1:5 (50mm)1:4.8 (40mm)1:2 (70mm)
Filter size55mm67mm67mm
Autofocus motorStepping motorHLA linear motorHLA linear motor
Image stabilisationNoneNoneOptical (OS), up to 6 stops
Weight290g535g615g
Dimensions (diameter x length)65.4 x 74.5mm72.9 x 115.9mm73.8 x 121.4mm

Why buy from Harrison Cameras?

Specialist camera retailer

Genuine UK stock, sold by people who actually use this gear -- not a general electronics marketplace.

Two ways to shop

Walk in and try before you buy at our Sheffield store, or order online with free UK mainland delivery on orders over £50.

Part-exchange and trade-in

Have equipment to trade? Part-exchange against a new camera or sell your gear for a bank transfer.

Full manufacturer warranty

Every new item comes with the full UK manufacturer warranty, not a grey-import or parallel-import version.