Comparison of Canon RF 100-500mm f/4.5-7.1 L IS USM and Tamron 100-400mm f/4.5-6.3 Di VC USD (Model A035)

Attribute	Canon RF 100-500mm f/4.5-7.1 L IS USM ×	Tamron 100-400mm f/4.5-6.3 Di VC USD (Model A035) ×
Aperture (f)	4.50 - 54.00	4.50 - 45.00
Filter Size (mm)	77	67
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 mounts: Canon EF, Nikon F; Optical Image Stabiliztion (CIPA: 4 stops); Moisture-Resistant Construction
Closest Focus (m)	0.9	1.5
Magnification Ratio (x)	0.12	0.28
Zoom System	Rotary	Rotary
Type	Telephoto Zoom	Telephoto Zoom
APS Equivalent	160 - 800mm	1.5x: 150 - 600mm; 1.6x: 160 - 640mm
Diaphragm Blades	9	9
Image Circle	35mm	Image Circle
Focal Length (mm)	100.00 - 500.00	100.00 - 400.00
Brand	Canon	Tamron
Name	Canon RF 100-500mm f/4.5-7.1 L IS USM	Tamron 100-400mm f/4.5-6.3 Di VC USD (Model A035)
Weight (g)	1365	1135
Diaphragm Blades Type	rounded	circular
Lens Construction	20 elements in 14 groups, including 6 UD and 1 Super UD element; fluorine coating	17 elements in 11 groups, including 3 LD (Low Dispersion) elements; eBAND coating; Fluorine coating
Diagonal Angle of View (degree)	5.00 - 24.00	6.20 - 24.40
Length (mm)	207.6	199
Diameter (mm)	93.8	86.2
Focus Details	Inner focusing; 2x Nano USM motors; Full-time manual focus; Focus limiter switch	Internal; USD (Ultrasonic Silent Drive) motor