Comparison of Canon EF 100mm ƒ/2.8 Macro USM and Tamron 90mm ƒ/2.8 Di MACRO 1:1 VC USD SP (Model F017)

Attribute	Tamron 90mm ƒ/2.8 Di MACRO 1:1 VC USD SP (Model F017) ×	Canon EF 100mm ƒ/2.8 Macro USM ×
Filter Size (mm)	62	58
Aperture (f)	2.80 - 32.00	2.80 - 32.00
Closest Focus (m)	0.3	0.31
Magnification Ratio (x)	1	1
Type	Telephoto Prime Macro	Telephoto Prime Macro
Focus Details	Internal; USD (Ultrasonic Silent Drive) with continuous manual focus mechanism	Inner focusing; full-time manual focus and USM
APS Equivalent	1.5x: 135mm; 1.6x: 144mm	160mm
Notes	Available mounts: Canon EF, Nikon F, Sony A; Optical Image Stabilization (3.5 stops); Weather resistant; Compatible with TAMRON TAP-in Console	-
Image Circle	35mm	35mm
Focal Length (mm)	90.00	100.00
Brand	Tamron	Canon
Name	Tamron 90mm ƒ/2.8 Di MACRO 1:1 VC USD SP (Model F017)	Canon EF 100mm ƒ/2.8 Macro USM
Weight (g)	610	600
Diagonal Angle of View (degree)	27.00	24.00
Diaphragm Blades	9	8
Diameter (mm)	79	79
Length (mm)	116.8	119
Diaphragm Blades Type	rounded	-
Lens Construction	14 elements in 11 groups, including 2 XLD (Extra Low Dispersion) and 1 LD (Low Dispersion) elements; eBAND and BBAR coatings	12 elements in 8 groups, including 2 aspherical elements