L1) 28-300MM F3.5-6.3 XR DI VC F/EOS
Brand: Tamron Model: AF020C-700 Released on: 2007-10-01 Dimensions: 2.00 pounds State of the Art Vibration Compensation Mechanism (VC) reduces blurred images induced by camera movement Remarkably Compact at less than 4" long and weighing only 19.4oz. Revolutionary MFD of 19.3 throughout entire zoom range yeilding a 1:3 Macro Magnification Ratio Unique Zoom Lock Mechanism for Enhanced Portability Flower-shaped Lens Hood and 6 Year Warranty are included, accepts 67mm filters.
Unleash the picture power of your digital SLR with this remarkable new compact, lightweight all-in-one zoom lens. Covering an impressive 10.7X, wide-to-longtelephotozoom range on both full-frame and APS-C format digital SLRs it gets down to an incredible 0.49m (19.3") at 300mm in Macro mode for dramatic framefilling close-ups. Zoom in for a macro shot And to optimize its outstanding real-world image quality we’ve built in our new high-tech, state-of-the-art VC (Vibration Compensation) system. The cutting edge 18-element and 13-group design of the 28-300mm VC lens incorporates XR (extra refractive-index ), LD ( low dispersion) and AD (anomalous dispersion ) glass as well as hybrid and GM (glass molded) aspherical elements to deliver exquisite sharpness and color correction over its extended range. The esteemed Di ( Digitally Integrated ) designation is your assurance of optimum digital and analog imaging performance. Capturing razor sharp handheld images just got AF28-300mm F/3.5-6.3 XR Di VC Features Di II Lenses are designed for exclusive use on digital cameras with smaller-size imagers and inherit all of the benefits of our Di products. These lenses are not designed for conventional cameras and digital cameras with image sensors larger than 24mm x 16mm. Vibration Compensation (VC) Camera shake can ruin your photos, particularly at telephoto or in low light. Tamron's state-of-the-art Vibration Compensation mechanism incorporated into the award-winning 28-300mm zoom gives you blur-free hand-held images for incredible results! Finally, the technology you need in the lens you want. VC delivers blur free - handheld images for incredible results VC mechanism employs a three-coil system Lens element compensates for vibration using 3-steel balls (making movement quiet & smooth) Exceptional images at slower shutter speeds – reduces the need for a tripod Bring out contrast to motion & stillness Eliminate the need to shoot with a Flash VC Off - VC On 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 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.
The best customer feedback 137 of 140 people found the following review helpful. Exceptional compact walk around lens with great variety at a reasonable price. To fugraw I had and tested the Tamron 28-300mm VC zoom for 2 months. Here's a quick review of my experience so far. Pros: Excellent optical quality (stronger at shorter focal length) Versatile multi-purpose walk around lens. Leave it on the camera without having to carry extra lenses. 28-300 impressive focal range equivalent to 44-480 on the sensor of 1.6 times the harvest. The compact size and light weight. Vibration compensation works very well zoom out and control the quality macro shots well built solid and gum feels a lot better than most of Canon lenses at reasonable prices in relation to comparable lens cap pinch Central includes coverage of the lens should be an industry standard. Greater peace of mind with Pros manufacturer standard 6 year warranty: angular sensor would be a good harvest in 1.6 times. If you shoot landscapes a lot of 44 mm may not be adequate in low light, the internal conditions, F3.5-6.3 aperture means I have to increase the ISO and use longer shutter speeds to shoot brighter. Occasionally, AF looks a little "low-light photography is not a big deal, but slow The Creeps (extends with gravity) when lens lock is off and the lens is pointing down. The conclusion is that the Tamron AF 28-300mm VC well choice if you are looking for a ride around the general objective of holding the camera. You can not beat the optical performance with a range so that a relatively compact and lightweight and well built, especially considering the price. 90 of 92 people found this review helpful. Very nice goal by Stephen Kalman I replaced two Canon lenses (18-135 and 70-300) with this single lens, and I'm glad I did. Most of my pictures are hand on trips or on holiday and I really do not want to bring a group of lenses or a change in the area. Last year I walked on a glacier in Canada and crossing the Sahara on horseback is a great place to change lenses and there were many times I missed a shot I wanted, because the right lens was in the bag, not in the camera. This is a small, lightweight, easy to use. I see no distortion of color or shape. I can have the same results from hand to slower shutter speeds to Tamron's VC as I have the Canon of the IS. I have some little gotcha, however. One is that the direction of the tap to zoom in the opposite direction of the Canon lens. That was a bit of getting used to. Another is that the autofocus is a bit higher. This can be a problem for places where silence is important. Third (and last), there is little difference between 200mm and 300mm contention focal length. In other words, it is difficult to make accurate decisions in the upper ends of the series. (All zooms are more detailed in their lower numbers, it's just that with a wide range this is more pronounced than usual) Overall I am very happy with this lens and recommend it to you. 71 of 74 people found the following review helpful. I love this lens by Ronan bower I love this lens - an all-purpose carry-around lens with VC built, and very good optics. I am amazed at the consistency of IQ of the photos I take - not what I expected from a general walk-around lens of this type. With my previous Nikon kit - the 18-200 was one of my favorite lenses, but IQ was always a little worse than I did with one of my special lenses ... Now with my Canon kit, I can clear that the Tamron 28-300 VC lens consistently gives me much better pictures as the Nikon 18-200 ever did in the same light conditions. The extra zoom is a blessing and basically allows your Canon camera, this lens, and nothing else on most photo shoots, especially if you are traveling. I would recommend this lens as a go-around general purpose lens, and I think you will find that the IQ is stunning - beyond what you would imagine with a lens of this
Kamis, 16 Juni 2011
Tamron AF 28-300mm f/3.5-6.3 XR Di LD VC (Vibration Compensation) Aspherical (IF) Macro Zoom Lens for Canon Digital SLR Cameras
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