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Pros Pros
  • Highly effective and quiet image stabilization
  • Robust build quality with moisture-resistant construction and fluorine coating
  • Fast, accurate, and near-silent autofocus performance
  • Sharp center-frame image quality with smooth bokeh
  • Significant cost savings compared to name-brand equivalents
Cons Cons
  • Soft corner performance and vignetting at wide apertures
  • Heavy and large physical footprint
  • Noticeable barrel distortion at the wide end
  • Zoom and focus ring direction differs from industry standards
  • Optical performance drops at longer focal lengths

Launch price Launch price $1,199
Focal length & aperture Focal length & aperture 24-70mm f/2.8
Mount & coverage Mount & coverage Canon EF, Nikon F · Full-Frame
Stabilization Stabilization Optical IS, 5 stops (CIPA)
Close focus Close focus 38.1 cm (0.2x)
Filter thread Filter thread 82mm
Autofocus motor Autofocus motor Ring-type ultrasonic
Weight & size Weight & size 905g (1 lb 15.9 oz) · 88.4 x 109.2 mm (3.48 x 4.30 in)

Announcement date Announcement date June 30, 2017
Launch MSRP Launch MSRP $1,199
Lens mount Lens mount Canon EF, Nikon F
Image circle coverage Image circle coverage Full-Frame
Lens type Lens type Zoom
Lens line / series Lens line / series SP

Elements Elements 17
Groups Groups 12

Focal length (wide) Focal length (wide) 24mm
Focal length (tele) Focal length (tele) 70mm
Max aperture Max aperture f/2.8
Minimum aperture Minimum aperture f/22
Diaphragm blades Diaphragm blades 9

Diagonal angle of view Diagonal angle of view 84° - 4°

Autofocus motor Autofocus motor Ring-type ultrasonic
Minimum focus distance Minimum focus distance 38.1 cm
Maximum magnification Maximum magnification 0.2x
Focus mechanism Focus mechanism Internal focus

Optical stabilization (OIS) Optical stabilization (OIS) Yes
OIS rating OIS rating 5 stops

Weight Weight 905g (1 lb 15.9 oz)
Maximum diameter Maximum diameter 88.4mm (3.48 in)
Length Length 109.2mm (4.30 in)
Filter thread Filter thread 82mm
Weather sealing Weather sealing None