Tamron SP AF 17-50mm f/2.8 XR Di II LD (IF) lens for Canon
Code: 12857
EAN: 4960371004709
Manufacturer code: A16E
Main info
- 17–50 mm high performance standard zoom
- Fast - constant f/2.8 aperture
- Internal focusing design
- Perfect for replacing kit-lens
- For Canon EOS DSLR's with APS-C sensor
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Lightweight. Fast. Super Performance
This 17-50mm is an extremely high-quality standard zoom with a high luminosity of 2.8 over the entire focal length range. It belongs to the Super performance ( SP) class of Tamron lenses distinguished by ultra high optical and mechanical quality. The high luminosity that this lens offers is ideal for low-light conditions and professional image composition. The result is images with smooth, even bokeh (background blur), where the subject is virtually released from the background. Apart from the unlimited possibilities that this lens has to offer, it is the quality of your images that stand in the focus.
The world´s shortest minimum focus distance of only 27 cm was achieved, by using 3 XR glass elements (Extra Refractive) in the front group coupled with a new mechanical design, whilst at the same time keeping the construction compact. The maximum magnification ratio of 1:4,5 and a weight of mere 430 g are also a worldwide top. Image defects are kept at an absolute minimum through the application of aspherical elements and LD (Low dispersion) glass as well as a special coating of internal glass surfaces (Internal Surface Coating). The result is high-quality extremely sharp and excellent images.
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.
Super Performance
Tamron's Super Performance series delivers a range of lenses that meet the highest standards.
XR (Extra Refractive Index) Glass
A special glass with a particularly high refractive index for greater performance and a compact lens design.
ASL
Hybrid aspherical elements ensure unique image quality and compactness.
LD (Low Dispersion)
Lens element for greater image sharpness and the correction of chromatic aberration.
Internal-Focusing (IF)-System
The extension length of the lens does not change during focussing and the close focussing distance is significantly reduced across the entire focusing range.
Zoom Lock (ZL) Mechanism
Protects against undesired extension of the lens barrel.
This 17-50mm is an extremely high-quality standard zoom with a high luminosity of 2.8 over the entire focal length range. It belongs to the Super performance ( SP) class of Tamron lenses distinguished by ultra high optical and mechanical quality. The high luminosity that this lens offers is ideal for low-light conditions and professional image composition. The result is images with smooth, even bokeh (background blur), where the subject is virtually released from the background. Apart from the unlimited possibilities that this lens has to offer, it is the quality of your images that stand in the focus.
The world´s shortest minimum focus distance of only 27 cm was achieved, by using 3 XR glass elements (Extra Refractive) in the front group coupled with a new mechanical design, whilst at the same time keeping the construction compact. The maximum magnification ratio of 1:4,5 and a weight of mere 430 g are also a worldwide top. Image defects are kept at an absolute minimum through the application of aspherical elements and LD (Low dispersion) glass as well as a special coating of internal glass surfaces (Internal Surface Coating). The result is high-quality extremely sharp and excellent images.
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.
Super Performance
Tamron's Super Performance series delivers a range of lenses that meet the highest standards.
XR (Extra Refractive Index) Glass
A special glass with a particularly high refractive index for greater performance and a compact lens design.
ASL
Hybrid aspherical elements ensure unique image quality and compactness.
LD (Low Dispersion)
Lens element for greater image sharpness and the correction of chromatic aberration.
Internal-Focusing (IF)-System
The extension length of the lens does not change during focussing and the close focussing distance is significantly reduced across the entire focusing range.
Zoom Lock (ZL) Mechanism
Protects against undesired extension of the lens barrel.
Technical data
Format compatibility
Canon crop frame DSLRs
Lens mount
Canon EF-S
Zoom / fix
Zoom lens
Lens type
Standard zoom
Focal length
17 – 50 mm
Focal length (35mm camera equivalent)
25.5 – 75 mm
Maximum aperture
f/2.8
Minimum aperture
f/32
Optical construction
16 elements in 13 groups
Focusing
Autofocus
Manual focus
Manual focus
AF motor
Micro motor
Image stabiliser
None
Minimum focus distance
27 cm
No. of diaphragm blades
7
Maximum reproduction ratio
0.22×
General
Diameter
74.0 mm
Length
81.7 mm
Weight
398 g
Filter thread
67 mm
Package contents
Lens
Front lens cap
Rear lens cap
Lens hood
Front lens cap
Rear lens cap
Lens hood
Product codes
EAN
4960371004709
725211167013
725211167013
Manufacturer code
A16E