The Specs

Optics
Min Focal Length 180 mm
Min Focus Distance 18.5 in
Filter Size Supported 72 mm
Additional Specifications
Angle of View 14 Degrees
Digital Format Yes
Max Aperture at Min Focal Length F/3.5
Maximum Aperture 3.5 1/f
Quick Glance
Max Focal Length 180 mm
Lens Type Telephoto
Max Aperture f/ 3.5
Compatible Camera Mount Canon EOS SLR Cameras
Other Features
Included Components Case|Lens Hood|Tripod Collar
Warranty
Warranty Information 6 Year Limited Warranty
More Info
URL http://www.tamron.com
Physical Specifications
Diameter 3.3 in
Weight 2.03 lbs
Length 6.5 in
Dimensions 6.52" Length x 3.34" Diameter

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