Comparison of Canon RF 70-200mm f/4L IS USM and Sigma 18-250mm ƒ/3.5-6.3 DC OS HSM

Attribute	Canon RF 70-200mm f/4L IS USM ×	Sigma 18-250mm ƒ/3.5-6.3 DC OS HSM ×
Notes	Optical Image stabilization with up to 5 stops of correction at 200mm; Up to 7.5 stops of combined IS with EOS R5/R6 bodies	Image Stabilization; Available AF mounts: Sigma, Canon, Nikon, Pentax, Sony; Includes petal-type lens hood.
Magnification Ratio (x)	0.28	0.29
Filter Size (mm)	77	72
Length (mm)	120	101
Closest Focus (m)	0.6	0.45
Diagonal Angle of View (degree)	12.00 - 34.00	5.70 - 69.30
Focus Details	Internal; Dual Nano Ultrasonic Motor (USM) with full-time manual focus; Focus limit switch	Internal with AF/MF switch
Focal Length (mm)	70.00 - 200.00	18.00 - 250.00
APS Equivalent	112 - 320mm	1.5x: 27 - 375mm; 1.6x: 28.8 - 400mm
Brand	Canon	Sigma
Image Circle	35mm	Image Circle
Name	Canon RF 70-200mm f/4L IS USM	Sigma 18-250mm ƒ/3.5-6.3 DC OS HSM
Weight (g)	695	630
Type	Telephoto Zoom	Standard Zoom
Aperture (f)	4.00 - 32.00	3.50 - 22.00
Diaphragm Blades	9	7
Diaphragm Blades Type	rounded	-
Lens Construction	16 lens elements in 11 groups, including four UD lenses; Air-Sphere Coating; Fluorine coating	18 elements in 14 groups, including 4 SLD and 3 aspherical elements
Zoom System	Rotary	Rotary
Diameter (mm)	83	79