(11 votes, average: 4.09 out of 5)

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Avg price: $600

Lens Construction
12 elements in 9 groups

Focal Length & Maximum Aperture
17 - 40mm; 1:4

Diagonal Angle of View
104° - 57° 30′

Focus Adjustment
Inner focusing system with USM

Closest Focusing Distance
0.28m / 0.9 ft.

Zoom System
Rotating type

Max. Diameter x Length, Weight
3.3″ x 3.8″, 1.1 lb. / 83.5 x 96.8mm, 500g

Filter Size
77mm