Specifications	Tamron 17-50mm f/2.8 XR Di II Lens
Year Introduced	2006
Mounts On	APS-C
Lenses / Groups	16/13
Aperture
Aperture Range - Wide / Long	f/2.8-32
Number of Aperture Blades	7
Rounded Aperture?
Weight
Manufacturer Specification Weight	15.3 oz  (434g)
Actual Weight	15.5 oz  (440g)
Lens Hood Weight	0.5 oz  (15g)
In-Use Weight	16.1 oz  (455g)
Size
Manufacturer Spec Size (DxL)	3.22 x 2.91”  (81.7 x 74mm)
Measured Size (DxL)	2.94 x 3.68”  (75 x 93.4mm)
Max Length at Full Extension	4.79”  (121.6mm)
Internal Zoom? / Extends with Zoom?	N / Y
Zoom Extension Length	1.11”  (28.2mm)
Internal Focusing? / Extends with Focusing?	Y / N
Lens Hood Size (DxL)	3.39 x 1.72”  (86.2 x 43.6mm)
Lens Length with Hood (Min-Max)	5.17 - 6.28”  (131.4 - 159.6mm)
Size of Rings: Focus / Zoom	0.69” / 1.58”  (17.4mm / 40.2mm)
Filter Size	67mm  UV ► CP ►
Front Element (Filter Mount) Rotates	N
Focus
AF Motor Type
Full Time Manual Focus	N
Focus Ring Rotation	52°
Focus Limiter? / Focus Limiter Ranges	N
Distance Scale? / Type	Y / Printed
Close Focus
Specified Min Focus Distance	10.63”  (270mm)
Tested Min Focus Distance (Wide / Long)	10.2” / 10.35”  (259mm / 263mm)
Maximum Magnification (MM)	0.22x
Magnification Range with 12mm Ext Tube
Magnification Range with 25mm Ext Tube
Features
Zoom Ring Rotation	80°
Tripod Ring Included? / Removable?	N
Lens Hood Included / Model?	Y /
Weather Sealed? / Filter Required?	N
Image Stabilization? / Stops? / Tripod Sensing?	N
Extender Compatible?	N
Case Included? / Type?	/
47.25" x 31.5" Subject Framing Distance	On APS-C DSLR: 17mm = 3.23' 24mm = 4.61' 35mm = 6.62' 50mm = 8.92'
1200mm x 800mm Subject Framing Distance	On APS-C DSLR: 17mm = 986mm 24mm = 1405mm 35mm = 2017mm 50mm = 2718mm
Review	Tamron 17-50mm f/2.8 XR Di II Lens