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Focal Length: 50 to 135mm Lens Mount: EF Zoom Ratio: 2.7:1 Optical Structure: 14 groups/18 elements Image Circle: 31.2 Minimum Focus Distance: 1.00m (3'3") Max. Macro Magnification: 1:5.89 Aperture/Iris Blades: 9 Depth of Field: T2.9- T22 Filter Size: M86 P=1.0 Overall Length (from mount surface): 147.5 (142mm) Diameter of Front Head: 95mm Maximum Diameter: 97.6mm...
