Comparison of Canon RF 100-500mm f/4.5-7.1 L IS USM and Sigma 100-400mm f/5-6.3 DG OS HSM Contemporary

Attribute	Canon RF 100-500mm f/4.5-7.1 L IS USM ×	Sigma 100-400mm f/5-6.3 DG OS HSM Contemporary ×
Notes	Image Stabilization with 3 modes and up to 5 stops correction; Dust and water resistant; Includes lens hood, removeable tripod mount and case.	Available AF Mounts: Sigma SA, Canon EF, Nikon F; Image Stabilized; Mount with dust- and splash-proof design; Compatible with Mount Converter MC-11
Magnification Ratio (x)	0.12	0.26
Filter Size (mm)	77	67
Length (mm)	207.6	182.3
Closest Focus (m)	0.9	1.6
Diagonal Angle of View (degree)	5.00 - 24.00	-
Focus Details	Inner focusing; 2x Nano USM motors; Full-time manual focus; Focus limiter switch	Internal; HSM with full-time manual override
Focal Length (mm)	100.00 - 500.00	100.00 - 400.00
APS Equivalent	160 - 800mm	1.5x: 150 - 600mm; 1.6x: 160 - 640mm
Brand	Canon	Sigma
Image Circle	35mm	35mm
Name	Canon RF 100-500mm f/4.5-7.1 L IS USM	Sigma 100-400mm f/5-6.3 DG OS HSM Contemporary
Weight (g)	1365	1160
Type	Telephoto Zoom	Telephoto Zoom
Aperture (f)	4.50 - 54.00	5.00 - 22.00
Diaphragm Blades	9	9
Diaphragm Blades Type	rounded	rounded
Lens Construction	20 elements in 14 groups, including 6 UD and 1 Super UD element; fluorine coating	21 elements in 15 groups, including 4 SLD elements
Zoom System	Rotary	Push/Pull
Diameter (mm)	93.8	86.4