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Certified Keeper Sigma 17-40mm f/1.8 DC Art
90 PixelMeter Score 23 reviews

Pros Pros
  • Premium build quality with weather sealing
  • Fast, silent, and accurate autofocus
  • Excellent image quality and sharpness
  • Fast and constant f/1.8 aperture
  • Compact, internal-zooming design ideal for gimbals
Cons Cons
  • Lacks optical image stabilization
  • Reliance on digital distortion and vignetting correction
  • Chromatic aberration and fringing issues
  • Softness in corners or at specific focal lengths
  • Limited or short zoom range

Launch price Launch price $919
Focal length & aperture Focal length & aperture 17-40mm f/1.8
Mount & coverage Mount & coverage Sony E, Canon RF, L-Mount, Fujifilm X · APS-C
Stabilization Stabilization None
Close focus Close focus 28 cm (0.21x)
Filter thread Filter thread 67mm
Autofocus motor Autofocus motor HLA
Weight & size Weight & size 560g (1 lb 3.8 oz) · 73 x 116 mm (2.87 x 4.57 in)

Announcement date Announcement date June 17, 2025
Launch MSRP Launch MSRP $919
Lens mount Lens mount Sony E, Canon RF, L-Mount, Fujifilm X
Image circle coverage Image circle coverage APS-C
Lens type Lens type Zoom
Lens line / series Lens line / series Art

Elements Elements 17
Groups Groups 11
Special elements Special elements 4 SLD, 4 aspherical
Coatings Coatings Super Multi-Layer Coating, Nano Porous Coating
Front fluorine coating Front fluorine coating Yes

Focal length (wide) Focal length (wide) 17mm
Focal length (tele) Focal length (tele) 40mm
Max aperture Max aperture f/1.8
Minimum aperture Minimum aperture f/16
Diaphragm blades Diaphragm blades 11

Diagonal angle of view Diagonal angle of view 76.5° - 37.1°

Autofocus motor Autofocus motor HLA
Minimum focus distance Minimum focus distance 28 cm
Maximum magnification Maximum magnification 0.21x
Focus mechanism Focus mechanism Internal focus

Optical stabilization (OIS) Optical stabilization (OIS) No

Aperture ring Aperture ring Yes
AF/MF switch AF/MF switch Yes

Weight Weight 560g (1 lb 3.8 oz)
Maximum diameter Maximum diameter 73mm (2.87 in)
Length Length 116mm (4.57 in)
Filter thread Filter thread 67mm
Weather sealing Weather sealing Full weather sealing
Internal zoom Internal zoom Yes
Tripod collar Tripod collar Not supported

Lens hood Lens hood LH728-02, included
Teleconverter compatibility Teleconverter compatibility Not supported