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Tamron SP AF 17-50mm F/2.8 XR Di II LD Aspherical [IF] Lens for Canon
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- Product Description: Tamron SP A016 - wide-angle zoom lens - 17 mm - 50 mm
- Lens System: Wide-angle zoom lens
- Intended for APS-C DSLR cameras
- Lens Aperture: F/2.8
- Focal Length: 17 mm - 50 mm
- Optical Zoom: 3 x
- Min Focus Range: 27 cm
- Focus Adjustment: Automatic, manual
- Lens Construction: 13 group(s) / 16 element(s)
- Special Functions: Wide angle, zoom
- Filter Size: 67 mm
- Length: 8.2 cm
- Weight: 434 g
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This item Tamron SP AF 17-50mm F/2.8 XR Di II LD Aspherical [IF] Lens for Canon
|Shipping||FREE Shipping||FREE Shipping||FREE Shipping||FREE Shipping||FREE Shipping||FREE Shipping|
|Sold By||Amazon.co.uk||electronicstore||Amazon.co.uk||Carmarthen Cameras||Amazon.co.uk||Carmarthen Cameras|
|Item Dimensions||10.41 x 13.46 x 10.41 cm||8.4 x 9.2 x 8.4 cm||3.93 x 6.92 x 3.93 cm||7.96 x 7.96 x 9.45 cm||7.3 x 7.3 x 9.2 cm||7.9 x 8.2 x 7.9 cm|
|Item Weight||0.57 kg||0.57 kg||160 grams||0.57 kg||0.51 kg||465 grams|
|Max Focal Length||50 mm||50 mm||50 mm||50 mm||75 mm||70 mm|
|Min Focal Length||17 mm||17 mm||50 mm||17 mm||28 mm||17 mm|
|Mounting Type||canon||canon||Canon EF / EF-S||Canon EF / EF-S||Canonbayonet||Canon EF / EF-S|
Style Name: Canon
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The Tamron 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.
The incredibly short minimum focus distance of only 27cm 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 low weight of just 430g are added to the many features of this lens. 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 especially sharp and high-quality images.
Super Performance for Discriminating Shooters (SP)
Tamron SP (Super Performance) series is a line of ultra-high-performance lenses designed and manufactured to the exacting specifications demanded by professionals and others who require the highest possible image quality. In creating SP lenses Tamron’s optical designers put their foremost priority on achieving superior performance parameters—they are all designed to a higher standard.
Tamron Di-II lenses are engineered expressly for digital SLR cameras with image sensors commonly referred to as APS-C, measuring approximately 24mm x 16mm. Rendering an ideal image circle for APS-C sensors, Di-II lenses also include properties to optimise digital imaging performance.
Special Glass for Better Performance and More Compact Lens Designs
XR (Extra Refractive Index) glass can bend light rays at steeper angles, thereby decreasing the physical length of the lens while enhancing imaging performance by minimising optical aberrations. This has allowed Tamron to develop a line of short, small-diameter, light lenses without sacrificing lens speed, and actually upgrading image quality compared to older designs. XR glass yields enhanced optical power distribution, making possible many of the lens designs that bear the XR designation. XR glass, with its exceptional light-bending power, makes it possible to design a short-barrel lens with the same light-gathering ability (aperture value) as a long-barrel lens—even with a smaller lens diameter. By using this principle Tamron has been able to shorten the length of the entire optical system and produce light, compact lenses of the same speed, and also to provide great zoom ranges in lenses that are much more convenient to carry and hand-hold.
Low Dispersion (LD) Glass for Greater Lens Sharpness
Low dispersion (LD) glass elements in a lens help reduce chromatic aberration, i.e. the tendency of light of different colours to come to different points of focus at the image plane. Chromatic aberration reduces the sharpness of an image, but glass with an extremely low dispersion index has less of a tendency to separate (diffract) a ray of light into a rainbow of colours. This characteristic allows the lens designer to effectively compensate for chromatic aberration at the centre of the field (on axis), a particular problem at long focal lengths (the telephoto end of the zoom range), and for lateral chromatic aberration (towards the edges of the field) that often occurs at short focal lengths (the wide-angle end of the zoom range.)
Internal Focusing (IF) System
Internal focusing (IF) provides numerous practical benefits to photographers, including a non-rotating front filter ring that facilitates the positioning of polarizing and graduated filters, and more predictable handling as the lens length does not change during focusing. Crucially, Tamron’s Internal Focusing (IF) system provides a close minimum focusing distance (MFD) throughout its entire focusing range. Also, IF improves optical performance by minimising illumination loss at the corners of the image field, and helps to suppress other aberrations that become more troublesome at different focusing positions.
Hybrid Aspherical Elements Provide the Ultimate in Image Quality and Compactness
Tamron uses several hybrid aspherical lens elements in many lenses bearing the Aspherical designation. These innovative optics allow us to achieve exceptional image quality, and at the same time produce lenses that offer remarkable zoom ranges in extraordinarily compact packages. By perfecting theses cutting-edge advances for series production, Tamron has virtually eliminated spherical aberration and image distortion from the high-power-zoom series. Through the effective application of Hybrid Aspherical Technology, one lens element can take the place of multiple elements without compromising performance. This is what allows us to produce remarkably compact long-range lenses that deliver a uniformly high level of image quality at all focal lengths and apertures.
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Top customer reviews
This lens isn't the fastest focusing nor the quietest. It is noisy while focusing, however this isn't a problem for me.
This is the only lens I now use with my camera and it's great. I am impressed with the picture quality.
The reason I'm not giving this lens 5 stars (and it is a very small anal thing) but I find that the zoom isn't so smooth and has some resistance compared to the Canon lens I used previously.
I would recommend getting a UV filter for the lens... its makes the world of difference and protects the glass.
This morning it had an error01 with my 40D.The 40D message says "communication between lens and camera is faulty-clean lens contacts" - i tried but didn't help.
And error99 with my 400D.
400D message says "Shooting is not possible-turn power switch to on and off, or reinstall battery - tried but didn't work.
I noticed when mounting the lens to the cameras, it made a sound just like when you press the DOF preview button when you are on f22. I tried remounting the lens and at the same time looking at the front element and it was the apperture blades that close and open for no reason. I didn't have this before.
I checked other lenses and my cameras work fine. Luckily Amazon offered a refund.
For the money, this lens is a cracker. Its sharper and shows less distortion than the Canon 17-85 IS (I owned one before). F2.8 is acceptable and gets sharper as its stopped down.
I'm not going to buy this lens again, and perhaps this will be the last 3rd party lens I've had.
I'll stick to canon lenses with USM.
Also, 17-50mm is actually a really handy wide angle, and when 50mm is a little short, just move in closer! I'm sure having this slightly shorter range than some 'walk-about' lenses, is how Tamron have kept such a high quality of optics and the constant f2.8 aperture.
The only real fault in day-to-day operation is mentioned by others: with the lens hood stored backwards on the lens, the manual focus ring is basically unusable. And there's no full-time manual focus, but if you're not used tot hat, then just flick that little switch ;-) And yes, the autofocus has a high-pitched noise, which can be a bit much if you're somewhere really quiet.
Otherwise, just go for it - worth every penny!
After recent testing in a couple of live venues, I'm really pleased with the results. Shots are sharp even at f2.8 and the wider aperture compared to a standard lens is a huge plus for low light work.
Build quality is good and feels sturdy and a nice weight. Auto focus is relatively quick, but is a bit loud compared to USM lenses (but that doesn't bother me). Factor in the price and I am very happy with this lens. A good buy and would recommend.
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Most recent customer reviews
The chromatic aberration is excellent at all focal lengths.
No distortion i have found.
This is now my go to lens.Read more