Comparison of Canon RF 100-500mm f/4.5-7.1 L IS USM and Sigma APO 135-400mm f/4.5-5.6 DG

Attribute	Canon RF 100-500mm f/4.5-7.1 L IS USM ×	Sigma APO 135-400mm f/4.5-5.6 DG ×
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, Canon, Nikon, Minolta, Pentax, Four-Thirds
Magnification Ratio (x)	0.12	0.19
Filter Size (mm)	77	77
Length (mm)	207.6	183.5
Closest Focus (m)	0.9	2
Diagonal Angle of View (degree)	5.00 - 24.00	6.20 - 18.20
Focus Details	Inner focusing; 2x Nano USM motors; Full-time manual focus; Focus limiter switch	Internal
Focal Length (mm)	100.00 - 500.00	135.00 - 400.00
APS Equivalent	160 - 800mm	1.5x: 202.5 - 600mm; 1.6x: 216 - 640mm
Brand	Canon	Sigma
Image Circle	35mm	35mm
Name	Canon RF 100-500mm f/4.5-7.1 L IS USM	Sigma APO 135-400mm f/4.5-5.6 DG
Weight (g)	1365	1245
Type	Telephoto Zoom	Telephoto Zoom
Aperture (f)	4.50 - 54.00	4.50 - 32.00
Diaphragm Blades	9	9
Diaphragm Blades Type	rounded	-
Lens Construction	20 elements in 14 groups, including 6 UD and 1 Super UD element; fluorine coating	13 elements in 11 groups, including 1 aspherical and 3 SLD elements
Zoom System	Rotary	Rotary
Diameter (mm)	93.8	88.5