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Sigma 17mm f4 DG DN Contemporary Lens (Leica L)

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Sigma 17mm f4 DG DN Contemporary Lens (Leica L)

Name: Sigma 17mm f4 DG DN Contemporary Lens (Leica L)
Brand: Sigma
SKU: 0085126415693
Price: 549.0 GBP
Availability: InStock

SigmaSKU: 0085126415693

Price:

£549.00

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In stock (2 units), ready to be shipped

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Sigma 17mm f/4 DG DN Contemporary Lens (Leica L)

Full-Frame | f/4 to f/22
Compact Ultra-Wide Angle Prime
Fast Internal Focus System
Rounded 7-Blade Diaphragm
Metal Lens Barrel
Dust & Splash-Resistant Design

Offering excellent image quality in an ultra-compact design, this Sigma 17mm f/4 DG DN Contemporary Lens is an ultra-wide-angle prime for Leica L mount cameras. Designed with an inner focusing system and stepping motor, this lens provides fast and reliable autofocus for both stills and video.

The optical design produces high sharpness and clarity throughout the aperture range, and individual elements feature a super multilayered coating to suppress flare and ghosting for greater contrast and colour fidelity when working in strong lighting conditions. Additionally, the lens offers a minimum focusing distance of just 4.7", which allows for unique close-up photographs with expansive backgrounds, making it particularly appealing to vloggers, hikers, landscape photographers, and more.

Compact, ultra-wide prime lens designed for full-frame Sony E-mount mirrorless cameras that can also be used on APS-C models where it provides a 25.5mm equivalent focal length.

Inner focus system with stepping motor for fast, reliable AF for both still and video use.

Equipped with an aperture ring, focus mode switch, and a knurled manual focus ring for a pleasing tactile experience.

Minimum focusing distance of 4.7" allows for unique close-up photographs with expansive backgrounds, making it particularly appealing to vloggers, hikers, landscape photographers, and more.

Compatible with AF assist function and lens aberration correction on supported cameras.

Dust and splash-resistant construction with a brass bayonet mount for ensured accuracy and durability.

Lens construction	9 elements in 8 groups
Angle of view	103.7°
Number of diaphragm blades	7 (rounded diaphragm)
Minimum aperture	F22
Minimum focusing distance	12cm
Maximum magnification ratio	1:3.6
Filter thread	55mm
Dimensions (diameter x length)	ø64.0mm × 48.8mm
Weight	225g

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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.