Comparison of Canon EF-S 10-22mm f/3.5-4.5 USM and Tamron 10-24mm ƒ/3.5-4.5 Di II LD SP AF

Attribute	Tamron 10-24mm ƒ/3.5-4.5 Di II LD SP AF ×	Canon EF-S 10-22mm f/3.5-4.5 USM ×
Filter Size (mm)	77	77
Notes	Included Accessories: Flower-Shaped Lens Hood; Available AF Mounts: Canon, Nikon, Pentax, Sony	EF-S lens mount, exclusively for EOS 20D, Digital Rebel, and newer bodies with APS-C sensors.
Closest Focus (m)	0.24	0.24
Magnification Ratio (x)	0.2	0.17
Type	Wide Zoom	Wide Zoom
Length (mm)	86.5	90
APS Equivalent	1.5x: 15 - 36mm; 1.6x: 16 - 38.4mm	16 - 35mm
Zoom System	Rotary	Rotary
Image Circle	APS-C	APS-C
Focal Length (mm)	10.00 - 24.00	10.00 - 22.00
Brand	Tamron	Canon
Name	Tamron 10-24mm ƒ/3.5-4.5 Di II LD SP AF	Canon EF-S 10-22mm f/3.5-4.5 USM
Weight (g)	370	385
Aperture (f)	3.50 - 22.00	3.50 - 22.00
Diaphragm Blades	7	6
Diagonal Angle of View (degree)	60.30 - 108.70	63.50 - 107.50
Lens Construction	12 elements in 9 groups, including 1 HID glass element and 2 LD glass elements	13 elements in 10 groups, including 3 aspherical and 1 S-UD elements
Diameter (mm)	83.2	83
Focus Details	Internal, with AF/MF switch	Inner focusing; full-time manual focus and USM