Comparison of Sigma APO 70-200mm f/2.8 EX DG HSM and Tokina 80-200mm f/2.8 AT-X 828 AF PRO

Attribute	Sigma APO 70-200mm f/2.8 EX DG HSM ×	Tokina 80-200mm f/2.8 AT-X 828 AF PRO ×
Magnification Ratio (x)	0.13	-
Filter Size (mm)	77	77
Focus Details	Internal; HSM with full-time manual override	Rotating
Closest Focus (m)	1.8	1.8
Lens Construction	17 elements in 14 groups, including 4 SLD elements	17 elements in 11 groups, including 1 SD element
Length (mm)	184	184
Focal Length (mm)	70.00 - 200.00	80.00 - 200.00
Diagonal Angle of View (degree)	12.30 - 34.30	12.30 - 30.30
Brand	Sigma	Tokina
Image Circle	35mm	35mm
Name	Sigma APO 70-200mm f/2.8 EX DG HSM	Tokina 80-200mm f/2.8 AT-X 828 AF PRO
Weight (g)	1270	1350
Type	Telephoto Zoom	Telephoto Zoom
Notes	Available AF Mounts: [HSM version]: Sigma, Canon, Nikon; [w/o HSM]: Minolta, Pentax	Available AF Mounts: Canon, Minolta, Nikon, Pentax; Included Accessories: Lens Hood, Fitted Soft Case
APS Equivalent	1.5x: 105 - 300mm; 1.6x: 112 - 320mm	1.5x: 120 - 300mm; 1.6x: 128 - 320mm
Aperture (f)	2.80 - 32.00	2.80 - 32.00
Diaphragm Blades	9	-
Zoom System	Rotary with lock; Internal	Rotary
Diameter (mm)	86.2	84