Sigma 18-50mm f2.8 DC DN Contemporary - Fujifilm X Mount Lens

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Sigma 18-50mm f2.8 DC DN Contemporary - Fujifilm X Mount Lens

Name: Sigma 18-50mm f2.8 DC DN Contemporary - Fujifilm X Mount Lens
Brand: Sigma
SKU: 085126585754
Price: 479.0 GBP
Availability: InStock

SigmaSKU: 085126585754

Price:

£479.00

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Stock:

In stock (8 units), ready to be shipped

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Sigma 18-50mm F2.8 DC DN Contemporary - Fujifilm X Mount

Petal-type lens hood
Simple dust- and splash-proof design
Designed to minimise flare and ghosting
Every single lens undergoes SIGMA’s proprietary MTF measuring system ‘A1’
7-blade rounded diaphragm
High-precision, durable brass bayonet mount
‘Made in Japan’ craftsmanship

The lens has a full-frame-equivalent zoom range of 27mm to 75mm, with superb edge-to-edge sharpness at all apertures owing to the latest optical design technology. This includes one Special Low Dispersion (SLD) element and three aspherical elements to control unwanted optical aberrations such as chromatic aberration.

The constant aperture of F2.8 allows for a shallow depth-of-field, making it easy to achieve blurry backgrounds. A fast aperture also makes it easier to shoot hand-held in low light – ideal for weddings and other situations where a tripod isn’t convenient. The 18-50mm has a minimum focusing distance of 12.1cm and a maximum magnification of 1:2.8, perfect for capturing close-ups of smaller subjects such as flowers and insects.

Exceptionally compact and lightweight body

Weighing less than 300g and measuring just under 77mm in length the 18-50mm F2.8 DC DN | Contemporary is the smallest and lightest lens in its class, balancing well with modern APS-C mirrorless camera bodies. It combines an aluminium internal structure with a Thermally Stable Composite (TSC) outer barrel to produce a robust but compact product that can withstand the rigours of daily use. Aluminium and TSC have a similar thermal expansion rate, helping the lens to deliver consistent results as temperatures change.


Lens Construction	13 elements in 10 groups (1 SLD, 3 Aspherical)
Angle of View (35mm)	76.5° – 31.7°
Number of Diaphragm Blades	7 Blades (Rounded diaphragm)
Maximum Aperture	F2.8
Minimum Aperture	F22
Minimum Focusing Distance	12.1cm (W) – 30cm (T)
Maximum Magnification	1:2.8 (W) – 1:5(T)
Filter Size Diameter	55mm
Dimensions	65.4mm × 74.5mm
Weight	290g
Supplied Accessories	Petal type hood (LH582-02), Front cap (LCF-55 III), Rear cap (LCR II)

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Understanding: Aperture

Aperture is the opening in a camera lens that controls how much light enters the camera. It's measured in f-stops like f/2.8 or f/8. Lower f-stop numbers mean wider openings, letting in more light and creating a shallow depth of field (blurry background). Higher f-stop numbers mean smaller openings, letting in less light and creating a larger depth of field (more of the scene in focus). Aperture also affects the quality of out-of-focus areas in the image (bokeh).

Understanding: Lens Types

Different lenses have different purposes to achieve different styles of images, some popular ones include:
Prime Lens: Fixed focal length, sharp images, great for portraits and dark settings.
Zoom Lens: Variable focal length, versatile for different shots and everyday use..
Wide-Angle Lens: Captures wide scenes like landscapes.
Telephoto Lens: Magnifies distant subjects, ideal for sports & wildlife.
Macro Lens: Perfect for close-up photography of small subjects.
Fisheye Lens: Ultra-wide perspective, creates unique images.

Understanding: Lens Mounts

Different camera brands use different lens mounts, which are like connectors that attach lenses to camera bodies. Each mount is specific to a particular brand and camera series. For example, Canon uses the EF and RF mounts, Nikon uses the F mount, Sony uses the E mount for its mirrorless cameras. These mounts dictate which lenses are compatible with which cameras. Some brands offer adapters to use lenses from other systems, but it's essential to ensure compatibility for proper functionality and autofocus performance.

Understanding: Manual and Autofocus

Manual focus and autofocus are two ways to adjust the sharpness of a camera lens. With manual focus, you turn a ring on the lens to bring the subject into focus yourself, giving you full control over what appears sharp in the image. Autofocus, on the other hand, relies on the camera's built-in technology to automatically adjust the focus for you, usually by detecting contrast or phase differences in the scene. Autofocus can be convenient, especially for fast-moving subjects or when you need to capture a quick shot, whereas manual focus allows for precise adjustments and creative control over the final image.