Tamron SP AF 17-50mm f/2.8 XR Di II VC LD IF Lens

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Striking Contrast and Impressive Sharpness

Tamron SP AF 17-50mm f/2.8 XR Di II VC LD Aspherical [IF]

Tamron 17-50mm f/2.8 XR Di II VC LD Aspherical The new Tamron SP AF 17-50mm VC encompasses the high volume 17-50mm focal range (35mm view equivalent viewing angle of 26-78mm when translated to the 35mm SLR format) giving it an enormously usable, high performance zoom range. Accomplishing striking contrast and sharpness, the lens delivers gorgeous images which are additionally augmented by a shallow field depth afforded by the big maximum f/2.8 aperture and enhance the photographers array of photographic articulation. This fast new zoom lens features the exclusive Tamron VC (Vibration Compensation) image stabilization device, which allows more opportunities to handheld your photography, like poor lighting situations such as night scenes evening, and indoor shooting, leading to spectacularly enhanced height of photographic liberty.

A fast f/2.8 lens that's wide-through-moderate-telephoto zoom and engineered exclusively for Nikon and Canon DSLR cameras with smaller image sensors. The new lens provides striking contrast and impressive sharpness and over its entire aperture range and focal-length with its maximum f/2.8 aperture size, it creates beautiful photos enhanced by shallow field depth with resulting natural, smooth, transitions to out-of-focus regions of the picture. Nov 19, 2011 ✓


Aspherical Lens - a lens whose curved surface does not conform to the shape of a sphere. An aspheric element is often called an aspherical lens. The asphere's more complex surface profile can eliminate spherical aberration and reduce other optical aberrations compared to a simple lens. A single aspheric lens can often replace a much more complex multi-lens system. The resulting device is smaller and lighter, and possibly cheaper than the multi-lens design. Aspheric elements are used in the design of multi-element wide-angle and fast normal lenses to reduce aberrations.

Di-II Series Design
Design has been improved by adding a gold-colored band between the focus and zoom rings to enhance the appearance and make it stand out as a Di-II lens. The rubber patterns of the zoom and focus control rings have been improved at the same time to compliment the digital camera design style and to provide better handling. Di-II Lenses are designed for digital SLR cameras with smaller imagers  

Low Dispersion lens elements
(LD Glass to reduce chromatic aberration for sharper images) Aspherical - contains aspherical elements (compensates for spherical aberration and distortion, making for better performance with fewer elements (and As a result allowing for smaller, lighter lenses)

XR Technology. Extra Refractive Index Glass (reduces lens size). The first most important reason that the lens is so compact is the use of high refractive index glass. That is, XR glass. High refractive index glass bends light more than normal or lower refractive index glasses. Normally, glass material having a refractive index of more than 1.69 is called high refractive index glass. In the A03 optical system, glass material having a refractive index of more than 1.69 is used in the front group. In addition, refractive index of the whole optical system is enhanced. By using high refractive index glass in the front group, we could make the elements in the first group thinner, and reduce one element in the second group. This made the overall length of the whole optical system shorter.

VC - Vibration Compensation.
Tamron’s proprietary tri-axial Vibration Compensation (VC) mechanism that minimizes the effects of handheld camera shake. Tamron’s image stabilization mechanism,  controls the effects of camera shake in three planes. VC provides more opportunities for sharp hand-held photography (up to 4-stops) at the slow shutter speeds needed when shooting in low-light conditions (e.g. night or indoor scenes) dramatically enhancing the user’s level of photographic freedom.

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Lens styleZoom lens
Max Format Size APS-C / DX  
Lens focal length17 – 50 mm  
Stabilization type Yes (vibration compensation)  
Camera mount Canon EFNikon F (DX)  
Diagonal angle of view 78 degree and 45 minute - 31 degree and 11 minute  
Aperture (lens diaphragm)
Largest aperture opening F2.8  
Smallest aperture opening F32.0  
Includes aperture ring No  
Total diaphragm blades 7  
Aperture annotations circular aperture  
Total Elements 19  
Number of Groups 14  
Minimum focus distance 0.29 m (11.42")  
Maximum magnification ratio 0.21 x  
Autofocus type Yes  
Lens motor Micromotor  
Full time manual focus Unknown  
Focusing method Internal  
Lens distance scale Yes  
Depth of field scale Yes  
Physical features
Overall weight570 g (1.26 lb)  
Lens diameter 80 mm (3.13")  
Overall length 95 mm (3.72")  
Lens color Black  
Zooming method Rotary (extending)  
Zoom lock switch Yes  
Filter thread size 72 mm  
Lens hood included Yes  
Lens hood code flower shaped hood  
Tripod collar included No

Lens Includes

• Flower Shaped Lens Hood
• Lens Caps



Tamron SP AF 17-50mm f/2.8 XR Di II VC LD IF Lens

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