Sigma 70mm f/2.8 DG Macro Art

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Lens Specifications
Name Sigma 70mm f/2.8 DG Macro Art
Image Circle 35mm
Type Telephoto Prime Macro
Focal Length 70mm
APS Equivalent 1.5x: 105mm; 1.6x: 112mm
Max Aperture f/2.8
Min Aperture f/22
Diaphragm Blades 9 (rounded)
Lens Construction 13 elements in 10 groups, including 2 aspherical elements, 2 FLD glass elements, 2 SLD glass elements, and one element with a high rate of anomalous partial dispersion and a high index of refraction
Diagonal Angle of View(Based on image circle) 34.3 degrees
Focus Details Internal with focus-by-wire system using coreless DC motor; full-time manual override (see release text)
Front Element Rotation No
Zoom System n/a
Closest Focus 25.8cm / 10.2 in.
Magnification Ratio 1.0x / 1:1
Filter Size 49mm
Dimensions(Length x Diameter) 105.8mm x 70.8mm / 4.2 in. x 2.8 in.
Weight 515g / 18.2 oz
Notes Available AF Mounts: Sigma SA, Canon EF, L-Mount, Sony E; Dust- and splash-proof construction; Compatible with Mount Converter MC-11 (Sigma and Canon mounts)
Typical Online Price US$569 (Avail. Canon EF: May 2018, Sigma SA: June 2018, L-Mount, Sony E-Mount: TBD)