Tamron AF 28-300mm f/3.5-6.3 XR Di LD Aspherical (IF) Macro Ultra Zoom Lens for Canon Digital SLR Cameras

Tamron AF 28-300mm f/3.5-6.3 XR Di LD Aspherical (IF) Macro Ultra Zoom Lens for Canon Digital SLR Cameras

Brand: Tamron Model: AF061C-700 Dimensions: 4.20" h x 4.30" w x 5.10" l, .55 pounds World's smallest and lightest 28-300mm lens (June 2004) 28-300mm focal length f/3.5-6.3 maximum aperture XR (Extra Refractive Index) glass Multipurpose lens for Canon 35mm film and digital SLRs; macro to telephoto ranges

Reach out and grab distant detail, wildlife, and sports action with this amazing 11X extended range wide-to-super tele zoom that covers both full-frame and consumer DSLR (APS-C) formats allowing you to focus down to an incredible 0.49m(19.3") (1:2.9) for breathtaking close-ups. If there’s any compact zoom that does it all on digital and film SLRs, this is it. Breathtaking close-ups AF28-300mm F/3.5-6.3 XR Di LD Aspherical (IF) Macro Highlights Di II Maintaining the high performance of the previous model, Tamron's 28-300mm zoom lens now features our "Di" design, making it the ideal lens for use with both digital and film cameras. The "Di" design is achieved by applying a new optical design to its coated surfaces, and by further enhancing our already stringent quality control system. Whether you shoot film or digital, the lens provides high image quality for both platforms. When used with APS-C size digital SLR cameras, the lens provides an angle of view equivalent to approximately 44-465mm, covering the standard to ultra telephoto range with no sacrifice of quality or aperture range. Low Dispersion (LD) 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.) Low Dispersion (LD) Glass for Greater Lens Sharpness Anomalous Dispersion (AD) for Better Color Correction Anomalous dispersion (AD) glass is a special type of optical glass that is used to achieve more precise control of chromatic aberrations, thereby enhancing overall imaging performance. Glass of this type provides an abnormally large partial dispersion ratio (amount of diffraction) for light of specific wavelength ranges (colors) within the visible spectrum. By combining AD glass having these special characteristics with elements made of normal glass having different dispersion characteristics, it is possible to control the dispersion factors of a specific wavelength. This enhanced level of control results in much lower levels of on-axis (central) chromatic aberration for telephoto lenses (or zooms used at tele-photo settings) and a significant reduction of lateral (peripheral) chromatic aber-ration for wide-angle lenses (or zooms used at wide-angle settings.) Anomalous Dispersion Extra Refractive Index Glass (XR) Extra Refractive Index (XR) glass can bend light rays at steeper angles, thereby decreasing the physical length of the lens while enhancing imaging performance by minimizing optical aberrations. This has allowed Tamron to develop a line of shorter, smaller-diameter, lighter lenses without sacrificing lens speed, and actually upgrading image quality compared to older designs. XR glass is costlier than conventional glass but it yields enhanced optical power distribution, making possible many of the outstanding and innovative lens designs that bear the XR designation. XR glass, with its superior 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 lighter, more compact lenses of the same speed, and also to provide greater zoom ranges in lenses that are much more convenient to carry by hand. Special glass for better performance and more compact lens designs 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. Achieve the ultimate in image quality with Asperical (ASL) lenses 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. Zoom Lock (ZL) Another original Tamron mechanical engineering concept is the Zoom Lock (ZL), a simple convenience feature that prevents undesired extension of the lens barrel when carrying the camera/lens unit on a neck strap.

Very helpful customer reviews 101 of 103 people found this review helpful. Nice versatile lens for Digital Rebel D. Smith, I love taking pictures, but I do not like carrying lots of equipment, where photography is not the focus of my trip, so I tried to find a goal that was easy, low cost, a useful reference range and decent sharpness in view of the above. I think the Tamron is perfect. Although this goal will not win points with "L'purists of the series, seemed to be a very useful - the lens - and light. Sure, it's slow ... Sure - it has a plastic ... Security - is not so sharp as a lot of goals with price tags less zoom ranges and higher ... But most people are not looking for enlargements, poster size, a goal that will not break your shoulder or your bank account that Tamron is a good fit. I used it for a few weeks now, and compared the results of the excellent Tamron 28-75 2.8 XR Di, Canon 50mm 1.8 8 (the "Plastic Fantastic") and the kit lens is not the tack-sharpness 50mm and 28-75, but it is still very acceptable. The range is the 'wow' you on the lens. Outside in decent light, you can really pull the subject up close. In a photo from the sixth Story taken from a beach hotel, I could clearly read a standard beach umbrella rental sign was about. 500 meters away. Indoors, the lens is simply too slow to be useful at full zoom, but quite good between 28-100mm with built-in flash (just make sure to remove the lens hood or the lower portion of the frame shadow) and even better with an external flash (I using the EX550). Focus is fast and silent in decent lighting, but it will hunt in dark scenes. In short,. If it makes a lens that focuses the sound, an incredible focal length, light weight and compact size at an attractive price, then consider this lens You see, as I assume that you know what the long-held with you behind on your device .. I'd much rather have a picture that can not be "as strong" as I do not because I am behind the lens 2 pounds left was doing. 81 of 88 customers found this review helpful. Great quality, great value by Gadge. (Note: Tamron also makes this lens for Nikon and Pentax digital SLR for the same price I actually have the Nikon version since I own a D70, but I thought my experience with this objective could help Canon D-SLR users as well. Please produce no flame me!) This new digital SLR Environmental Tamron is a good way to achieving a high quality zoom at a fraction of the cost if the manufacturer of the camera (eg Canon ) purchased. Tamron claims that this world is "the smallest and lightest" zoom zoom range. I have no idea if it's true. It is small and light effect. For me, it's a goal for all plastic, but does so on the basis of objective and Japan, and it feels solid, has all the bells and whistles of a modern lens: the ability of XR, LD, asperical more macros. In real world shooting, I am very pleased with the result, and I do not believe that the purchase of an official goal of Canon would make a big difference. Two things to keep in mind is, 1) until you buy namebrand a lens (Tamron, Sigma and Vivitar maybe) get a good deal, and 2) the marginal increase in quality of the lens (real or imagined) of manufacturer of the camera is extremely unlikely to improve images in any significant amounts. Ansel Adams Add a disposable camera and take pictures would be even better than you and me, that's all. As long as you have a high quality, Tamron capable as this, you are armed with all the equipment needed to not miss the opportunity to outstanding image. A person must not sell single ingredient is your creativity. (Unfortunately, this is what I miss and try to improve. For now, at least Tamron gives me the right tools) for the Digital Rebel, the 1.6 "magnification" factor (or crop factor) is the effective focal length of the Tamron 45-480mm is about inches