Tamron AF 10-24mm f/3.5-4.5 SP Di II LD Aspherical (IF) Lens for Canon Digital SLR Cameras (Model B001E)
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Product Feature
- The world's first 2.4X zoom with an equivalent 16-37mm (when converted to full frame)
- The best magnification ratio in this class of 1:51
- Extremely compact and light
- Flower-shaped Lens Hood and Case Included
- 77mm Filter size
Product Description
The ultimate extended-range, ultra-wide-angle zoom lens! Wider and longer than others in its class, this compact, lightweight, high-performance lens for DSLRs with APS-C size sensors provides 35mm equivalent coverage from 16mm ultra-wide to 37mm semiwide, a remarkable 2.4X zoom ratio. With a maximum coverage of over 108� , this state-of-the-art classic is the perfect solution for expanding your visual horizons.
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This ultra wide-angle zoom lens for digital SLR cameras, with the first-ever focal length range of 10-24mm-the 35mm equivalent of 16mm ultra wide-angle to 37mm semi-wide-angle-is a perfect tool for creating dramatic landscape, cityscape,a nd seascape imagery. At the ultra wide-angle setting, you'll be able to capture vistas beyond what the eye can see. At the semi-wide-angle setting, you'll capture scenes with angles of view almost as spectacular.
SP AF10-24mm F/3.5-4.5 Di II Features
Di II
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Super Performance (SP) for Discriminating Shooters
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 with little regard for cost constraints. As a result, Tamron lenses bearing the SP designation feature impressive and innovative designs that have established an enviable reputation for excellence among those knowledgeable photographers that demand the very best.
Internal Focus (IF)
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 because the lens length does not change during focusing. Even more important, Tamron's Internal Focusing (IF) system provides a much closer minimum focusing distance (MFD) throughout its entire focusing range. In addition, IF improves optical performance by minimizing illumination loss at the corners of the image field, and helps to suppress other aberrations that become more troublesome at different focusing positions.
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Low dispersion (LD) glass elements in a lens help reduce chromatic aberration; the tendency of light of different colors to come to different points of focus at the image plane. Chromatic aberration reduces the sharpness of an image, but glass with an extremely lowdispersion index, has less of a tendency to separate (defract) a ray of light into a rainbow of colors. This characteristic allows the lens designer to effectively compensate for chromatic aberration at the center 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.)
Aspherical Elements (ASL) 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 the ultimate in 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 advanced the state of optical design, and virtually eliminated spherical aberration and image distortion from the high-power-zoom series.Through the effective application of Hybrid Aspherical Technology, one lens elemen tcan 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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Tamron AF 10-24mm f/3.5-4.5 SP Di II LD Aspherical (IF) Lens for Canon Digital SLR Cameras (Model B001E) Review
I'd imagine that many people are shying away from this lens due to some of the reviews. Rockwell's ultra-wide comparison is where I first heard about this lens, and it did not do too favorably there...I was looking for an ultra-wide lens for Nikon DX format, with easy to correct distortion. I was originally looking for the Tokina 11-16, which has gone up in price considerably several times, and NEVER seems to be available. I was also thinking about the sigma, but the inability to correct the distortion easily wide open didn't make me too happy, and I couldn't find one locally to test. The nikon 10-24 isn't available yet, and the 12-24 is too expensive and not wide enough.
So, I decided to check this lens out at a local photo shop, and I'm glad I did. After a few test shots, I ended up purchasing it. It was sharp enough for my needs - A bit soft wide open, but I never shoot wide angle lenses wide open. F/8 looks near perfect to me on all edges and corners, with some slight color fringing that I REALLY had to look to see. The edges are occasionally soft, but I have only noticed this when I am pixel peeping.
It seems surprisingly well built. Metal mount is always nice, and the focus and zoom both have very good feels to them. It just feels RIGHT in my hands. I haven't drop tested it, and I don't plan to. I could see the AF mechanism going out on a bad drop, but that's just pure speculation.
Another plus - There is MORE than enough room to put whatever UV filter you would like on it with no vignetting. I don't know about filter stacking, but again, I never stack filters.
It does have it's quirks. AF stopped on me once when I was switching back and forth from AF to MF. A remount of the lens solved this, and I haven't had this issue since.
I'm also suspicious about the quality control. It looks like I got a good copy, but I can tell that a few out there have not. Just make sure you have a good return policy.
I'm not sure where you could go wrong with this lens. If you pixel peep and need ultimate sharpness wide open, go with the Tokina - It's a pro lens, and it's price has definitely increased to reflect that. I'm sure that the Nikon 10-24 will be an amazing lens as well - of course, at twice the price. For the non-pixel peepers who just want to make great ultra wide photos, it's hard to go wrong here. It's not optical perfection, but it's a damn good lens.
It all comes down to how you want to use it and what your budget is. Interior shooters, take note - Used in conjuction with a bounce flash, I get super-sharp and relatively distortion free images that look better than any interior shot I have ever taken.
Five stars because I couldn't be happier with this lens for my needs.
EDIT: After a couple of weeks, I've noticed something mentioned in an off-site review in which this lens was described as having a curved focus field - A ')' shape, if you will. After abusing this lens by shooting extremely (And I mean EXTREMELY) close up flat surfaces, I can agree with this. What this means in practice is that test charts and brick walls shot from a foot away may not be as sharp as they could, but real world usage is still great. What this also means is that if you shoot a lot of interiors or other scenes in which you have walls on both sides of you and a center of focus at the rear, the curved field will be very beneficial to the overall sharpness of the image. Just something to be aware of - I'm still happily shooting, it's exactly what I needed.
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