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Tamron AF 17-50mm f/2.8 XR Di II LD Aspherical Lens (IF) - Canon Mount
Product Description :
Construction 13 Groups 16 Elements Diaphragm 7 blades
Angle of view 78 at 45 - 31 at 11 APS-C size equivalent
F stop range 28- 32
Closest Focusing Distance 106in 027m
Maximum Magnification 145 Maximum Aperature f28-4