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![SP AF 17-50mm F/2.8 XR Di II VC LD Aspherical [IF]](https://tamron.in/product_image/lens/b005/slide_02.jpg)
Stabilized. Fast. Super Performance.
The large-aperture and excellent optical performance that this lens offers is ideal for low-light photography and enriched creative picture composition possibilities. The new lens delivers pin sharp results and remarkable contrasts throughout the entire focal length range. With an aperture of F/2.8 impressive photos with smooth, even bokeh (background blur), can be shot helping to emphasize subjects by means of a very shallow depth of field.
This lens is equipped with a tri-axial image stabilizer called vibration Compensation (VC), a Tamron proprietary development. The VC feature minimizes the effects of camera vibrations and shake of hand-held photography. The lens offers more photographic possibilities for shots at longer shutter speeds, making it ideally suitable for "Available Light" photography in low-light conditions.
Please note that Di II lenses are made for the exclusive use on digital SLR cameras with image sensors smaller than 24mm x 16mm. Di II lenses cannot be used together with a full format or 35mm SLR camera, as their image sensors are not able to cover the entire area of full format resulting in dark corners of the (i.e. vignetting becomes noticeable).
Delivering leading-edge image quality
The optical design of this lens uses a high-performance XLD (Extra Low Dispersion) element, which is manufactured out of a special glass with an extremely low refractive index. The refractive index describes the ability of the lens to split a light beam into its spectral colours. The dispersive properties are even lower than standard LD lenses and are at a level similar to fluorite. The XLD lens in combination with the LD element delivers the highest contrast and brilliance. This effectively prevents the problem of chromatic aberration in telephoto photography and delivers a high level of sharpness even in the peripheral regions. The result is a lens that effectively compensates for axial chromatic aberration and magnification aberration throughout the entire zoom range and guarantees the highest resolution and brilliance for your pictures.
The tried-and-tested Tamron VC Image Stabilizer (Vibration Compensation) ensures this lens delivers sharp and shake-free images. This means that the lens is also perfectly suited for hand-held photos and low-light conditions.
Technical Information
Specifications
| Model | B005 |
|---|---|
| Focal Length | 17-50mm |
| Maximum Aperture | F/2.8 |
| Angle of View (diagonal) | 78°45’ - 31°11’ |
| Optical Construction | 19 elements in 14 group |
| Minimum Focus Distance | 0.29m |
| Maximum Magnification Ratio | 1:4.8 |
| Filter Size | Φ72mm |
| Diameter x Length | Φ79.6 x 94.5 mm |
| Weight | 570 g |
| Aperture Blade | 7 |
| Minimum Aperture | F/32 |
| Standard Accessories | Flower-shaped lens hood, Lens caps |
| Compatible Mounts | Canon, Nikon |
Specifications, appearance, functionality, etc. are subject to change without prior notice.
** The circular diaphragm stays almost perfectly circular up to two stops down from maximum aperture.
Optical Construction(19 elements in 14 group)
