Comparison of Sigma APO 100-300mm f/4 EX IF HSM and Tokina 70-200mm f/4 AT-X AF PRO FX VCM-S SD

Attribute	Sigma APO 100-300mm f/4 EX IF HSM ×	Tokina 70-200mm f/4 AT-X AF PRO FX VCM-S SD ×
Filter Size (mm)	82	67
Notes	Available AF Mounts: [100-300mm F4 APO EX IF HSM]: Sigma, Canon, Nikon; [100-300mm APO F4 EX IF]: Minolta, Pentax	Optical Image Stabilization (3-stops); Available AF Mounts: Nikon; Included Accessories: Lens hood; Tripod collar optional
Closest Focus (m)	1.8	1
Magnification Ratio (x)	0.2	0.28
Type	Telephoto Zoom	Telephoto Zoom
Length (mm)	226.5	168
APS Equivalent	1.5x: 150 - 450mm; 1.6x: 160 - 480mm	1.5x: 105 - 300mm; 1.6x: 112 - 320mm
Zoom System	Rotary; Internal	Rotary
Image Circle	35mm	35mm
Focal Length (mm)	100.00 - 300.00	70.00 - 200.00
Brand	Sigma	Tokina
Name	Sigma APO 100-300mm f/4 EX IF HSM	Tokina 70-200mm f/4 AT-X AF PRO FX VCM-S SD
Weight (g)	1440	980
Aperture (f)	4.00 - 32.00	4.00 - 32.00
Diaphragm Blades	9	9
Diagonal Angle of View (degree)	8.20 - 24.40	12.70 - 34.80
Lens Construction	16 elements in 14 groups, including 4 SLD elements	19 elements in 14 groups, including 3 SD elements
Diameter (mm)	92.4	82
Focus Details	Internal; HSM with full-time manual override	Internal with ultrasonic motor