Comparison of Sigma APO 50-150mm f/2.8 II EX DC HSM and Tokina 70-200mm f/4 AT-X AF PRO FX VCM-S SD

Attribute	Tokina 70-200mm f/4 AT-X AF PRO FX VCM-S SD ×	Sigma APO 50-150mm f/2.8 II EX DC HSM ×
Filter Size (mm)	67	67
Notes	Optical Image Stabilization (3-stops); Available AF Mounts: Nikon; Included Accessories: Lens hood; Tripod collar optional	Available AF Mounts: Sigma, Canon, Nikon, Pentax, Sony; Included Accessories: Case, Lens Hood (LH850-01).
Closest Focus (m)	1	1
Magnification Ratio (x)	0.28	0.19
Type	Telephoto Zoom	Telephoto Zoom
Length (mm)	168	140.2
APS Equivalent	1.5x: 105 - 300mm; 1.6x: 112 - 320mm	1.5x: 75 - 225mm; 1.6x: 80 - 240mm
Zoom System	Rotary	Rotary
Image Circle	35mm	APS-C
Focal Length (mm)	70.00 - 200.00	50.00 - 150.00
Brand	Tokina	Sigma
Name	Tokina 70-200mm f/4 AT-X AF PRO FX VCM-S SD	Sigma APO 50-150mm f/2.8 II EX DC HSM
Weight (g)	980	780
Aperture (f)	4.00 - 32.00	2.80 - 22.00
Diaphragm Blades	9	9
Diagonal Angle of View (degree)	12.70 - 34.80	9.50 - 27.90
Lens Construction	19 elements in 14 groups, including 3 SD elements	18 elements in 14 groups, including 4 SLD elements
Diameter (mm)	82	76.5
Focus Details	Internal with ultrasonic motor	HSM (Hyper Sonic Motor) with full-time manual focus override