Sigma 18-35mm f/1.8 DC HSM Art for Canon EF mount

Sigma 18-35mm f/1.8 DC HSM Art Lens
For Canon EF APS-C
With constant maximum aperture of f/1.8
18-35mm Zoom (35mm equivalent of 28.8-56mm)
Fully internal mechanism zoom

17 elements in 12 groups, including 5 SLD and 4 aspherical glass
Filter thread 72mm

Very lightly used only, always kept in dry box
No visible scratch or dent

(I have been using it occasionally on my Sony A7R III, with my Fotodiox pro auto adaptor, which i am also letting go, smooth, but in super 35 mode)