Comparison of Canon EF 100-400mm f/4.5-5.6L IS II USM and Sigma APO 50-500mm ƒ/4-6.3 EX DG HSM

Attribute	Sigma APO 50-500mm ƒ/4-6.3 EX DG HSM ×	Canon EF 100-400mm f/4.5-5.6L IS II USM ×
Notes	Available AF Mounts: [HSM version]: Sigma, Canon, Nikon, Four-Thirds; [w/o HSM]: Minolta, Pentax	Improved Image Stabilization with 3 modes and up to 4 stops correction; Dust and water resistant; Includes lens hood, tripod mount and case.
Magnification Ratio (x)	0.19	0.31
Filter Size (mm)	86	77
Length (mm)	218.5	193
Closest Focus (m)	1	0.98
Diagonal Angle of View (degree)	5.00 - 46.80	6.20 - 24.00
Focus Details	Internal; HSM with full-time manual override	Inner focusing; Full-time manual focus and USM; Focus limiter switch; High-speed CPU and optimized AF algorithms
Focal Length (mm)	50.00 - 500.00	100.00 - 400.00
APS Equivalent	1.5x: 75 - 750mm; 1.6x: 80 - 800mm	160 - 640mm
Brand	Sigma	Canon
Image Circle	35mm	35mm
Name	Sigma APO 50-500mm ƒ/4-6.3 EX DG HSM	Canon EF 100-400mm f/4.5-5.6L IS II USM
Weight (g)	1840	1640
Type	Telephoto Zoom	Telephoto Zoom
Aperture (f)	4.00 - 22.00	4.50 - 40.00
Diaphragm Blades	9	9
Diaphragm Blades Type	-	rounded
Lens Construction	20 elements in 16 groups, including 4 SLD elements	21 elements in 16 groups, including 1 Flourite and 1 Super UD element; Air Sphere Coating (ASC)
Zoom System	Rotary with lock	Rotary
Diameter (mm)	95	94