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Black Sigma Art zoom lens for Fuji X mount 17-40mm f1.8

SIGMA

SIGMA 17-40mm F1.8 DC Art Fuji X camera lens

SKU CH-D6V7-445VP

Constant f/1.8 zoom lens for Fuji X mirrorless cameras covering 17-40mm, built to Art-series optical standards

  • TypeZoom Lens
  • CompatibilityMirrorless Camera
  • ColorBlack
  • Constant f/1.8 aperture enables low-light shooting
  • 17-40mm zoom covers wide-angle to standard views
  • Fuji X mount fits mirrorless cameras directly
  • Art series optics deliver professional image quality
  • Black zoom lens built for versatile use

Fuji X-mount zoom lens

The Sigma 17-40mm F1.8 DC Art is a constant-aperture zoom lens built for Fuji X mirrorless cameras. It covers a 17-40mm focal range with a fixed f/1.8 maximum aperture. The lens belongs to Sigma's professional Art line and uses an all-black finish. It is designed for photographers who need wide to standard angles with consistent brightness across the zoom.

Indoor and low-light shooters

This lens suits photographers who work in dim environments and want a single zoom that stays at f/1.8 throughout its range. Event, interior and astrophotography users benefit from the constant aperture. Buyers who need telephoto reach beyond 40mm should look at other lenses. Those who prioritise the smallest possible kit size may prefer a variable-aperture zoom or prime alternatives.

Constant f/1.8 aperture

The defining specification is the fixed f/1.8 maximum aperture across the entire 17-40mm zoom range. Exposure settings remain unchanged while zooming, which simplifies manual metering and video work. Depth of field control and low-light capability are identical at 17mm and 40mm. This constant aperture is the primary reason to choose this lens over variable-aperture zooms.

Highlights

  • Constant f/1.8 aperture enables low-light shooting
  • 17-40mm zoom covers wide-angle to standard views
  • Fuji X mount fits mirrorless cameras directly
  • Art series optics deliver professional image quality
  • Black zoom lens built for versatile use

Specifications

TypeZoom Lens
CompatibilityMirrorless Camera
ColorBlack
BrandSIGMA

Questions about this item

How does the constant f/1.8 aperture affect exposure when zooming from 17mm to 40mm?

The f/1.8 aperture stays fixed through the entire zoom range, so shutter speed and ISO do not need to change when you reframe.

Does the lens barrel extend or rotate during zoom or focus, and could that change balance on a small mirrorless body?

The barrel design keeps length constant while zooming and focusing, keeping the centre of gravity steady on Fuji X cameras.

What Fuji X-mount camera features does the lens rely on for autofocus and aperture control?

It uses the camera body's focus motor and electronic aperture linkage, so any Fuji X mirrorless body will drive AF and set the f/1.8 aperture.

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