Canon EF-S 17-85mm f/4-5.6 IS USM

Check the front lens ring for the text "CANON ZOOM LENS EF-S 17-85mm 1:4-5.6 IS USM".

General:

• Focal Range: 17-85 mm
• Maximum Aperture: f/4-5.6
• Minimum Aperture: f/22-32
• Closest Focusing Distance: 0.35 m (1.2 ft)
• Maximum Magnification: 0.20 x (at 85 mm)

Construction:

• Lens Groups: 12
• Lens Elements: 17
• No. of Diaphragm Blades: 6 (circular aperture)
• AF Actuator: USM
• Image Stabilizer OIS: 3-steps

Physical:

• Lens Mount Type: Canon EF-S
• Filter Diameter: 67 mm
• Maximum Diameter x Length: 78.5 x 92 mm
• Weight: 475 g

Accessories:

• Lens Hood: EW-73B
• Lens Case/Pouch: LP1116
• Magnification - Extension Tube EF12 II: 0.43 - 0.14
• Magnification - Extension Tube EF25 II: 0.72 - 0.33

Source: Canon Camera Museum Webpage & Canon Lens Specifications

Instruction Manual

Wikipedia: Canon EF-S 17-85mm Lens

Canon Camera Museum Webpage

Canon Lens Specifications