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Certified Keeper Sigma 28-105mm f/2.8 DG DN Art
88 PixelMeter Score 30 reviews

Pros Pros
  • Fast, silent, and accurate autofocus
  • Robust, weather-sealed build quality
  • Feature-rich design including aperture ring and customizable buttons
  • Excellent sharpness and optical performance
  • Versatile focal range with constant f/2.8 aperture
Cons Cons
  • Large, heavy, and bulky physical design
  • Lacks built-in optical image stabilization
  • Distortion and vignetting present at focal extremes
  • External zoom mechanism extends the lens
  • Busy or inconsistent bokeh rendering

Launch price Launch price $1,499
Focal length & aperture Focal length & aperture 28-105mm f/2.8
Mount & coverage Mount & coverage Sony E, L-Mount · Full-Frame
Stabilization Stabilization None
Close focus Close focus 40.1 cm (0.32x)
Filter thread Filter thread 82mm
Autofocus motor Autofocus motor Linear motor
Weight & size Weight & size 990g (2 lb 2.9 oz) · 89 x 160 mm (3.50 x 6.30 in)

Announcement date Announcement date September 26, 2024
Launch MSRP Launch MSRP $1,499
Lens mount Lens mount Sony E, L-Mount
Image circle coverage Image circle coverage Full-Frame
Lens type Lens type Zoom
Lens line / series Lens line / series Art

Elements Elements 18
Groups Groups 13
Special elements Special elements 5 aspherical, 1 SLD, 2 FLD
Coatings Coatings Water- and Oil-Repellant Coating
Front fluorine coating Front fluorine coating Yes

Focal length (wide) Focal length (wide) 28mm
Focal length (tele) Focal length (tele) 105mm
Max aperture Max aperture f/2.8
Minimum aperture Minimum aperture f/22
Diaphragm blades Diaphragm blades 12

Diagonal angle of view Diagonal angle of view 75.4° - 23.3°

Autofocus motor Autofocus motor Linear motor
Minimum focus distance Minimum focus distance 40.1 cm
Maximum magnification Maximum magnification 0.32x
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 990g (2 lb 2.9 oz)
Maximum diameter Maximum diameter 89mm (3.50 in)
Length Length 160mm (6.30 in)
Filter thread Filter thread 82mm
Weather sealing Weather sealing Full weather sealing
Barrel material Barrel material Magnesium alloy
Internal zoom Internal zoom No
Tripod collar Tripod collar Not supported

Lens hood Lens hood LH878-07 petal, included
Teleconverter compatibility Teleconverter compatibility Not supported