Tamron AF 18-200mm f/3.5-6.3 XR Di II LD Aspherical (IF) Macro Zoom Lens for Konica Minolta and Sony Digital SLR Cameras

Tamron is proud to have introduced the concept of their high-power zoom lens with AF 18-200mm XR Di II -- for exclusive use with digital SLRs. Tamron s original development of proprietary core technologies such as Aspherical element production, Multiple Cam Mechanism and Integrated Focus Cam design lend to the creation of the world s lightest, most compact 11.1X zoom lens made for digital SLR cameras. The 18-200mm (28-300 when converted to 35mm) provides the digital photographer with the versatility of a true wide to ultra tele zoom in an amazingly easy to use design. Tamron s Di II lenses are designed for exclusive use on digital cameras with smaller-size imagers and inherit all of the benefits of their Di products. These lenses are not designed for conventional cameras and digital cameras with image sensors larger than 24mm x 16mm. Item Specifications: Product Description: Tamron A014 - zoom lens - 18 mm - 200 mm Manufacturer Warranty: 6 years warranty Weight: 14 oz Length: 3 in Min Focus Range: 17.7 in Lens System: Zoom lens Optical Zoom: 11.1 x Lens Aperture: F/3.5-6.3 Focus Adjustment: Automatic, manual Focal Length: 18 mm - 200 mm Mounting Type: Minolta A-type Lens Construction: 13 group(s) / 15 element(s) Filter Size: 62 mm Special Functions: Zoom

Brand: Tamron Model: Minolta AF Dimensions: 4.20" h x 4.30" w x 5.30" l, .88 pounds For digital SLR photography, it provides high image quality in terms of resolution, contrast and flatness of image field Designed to confine the changing angles of incidences of light rays reaching the imager within a certain scope Peripheral light fall-off is minimized when compared with that of conventional lenses for film cameras Complicated mechanisms are built in the compact body thanks to new mechanical artifices. The Zoom Lock prevents unwanted barrel extension when carrying the lens/camera combination

Tamron's original development of proprietary core technologies such as Aspherical element production, Multiple Cam Mechanism and Integrated Focus Cam design lend to the creation of the world's lightest, most compact 11x zoom lens made for digital SLR cameras. Zoom in for a macro shot AF18-200mm F/3.5-6.3 XR Di II Highlights 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. Extra Refractive Index Glass (XR) Special glass for better performance and more compact lens designs 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. 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 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 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.

The best customer reviews 21 of 21 people found this review helpful. Excellent value for money for this lens LambertWM purchased to replace the kit lens that comes with the Sony Alpha 300. I wanted an overarching goal, then I would not have to load / change multiple lenses. I am very happy with the results: pictures of excellent quality, very easy to use due to the effects of the range 18-200. Some observations: - Though the lens does not feel too heavy, if you point the camera down the lens 'zoom in' due to gravity pulling it out. Understandable, but sometimes feels awkward. There is a zoom lock switch, certainly. - If he puts the fight against sunlight-cap-thingie back in goal (to keep it there), you can not access the manual focus ring more. Understood and documented but not yet practical. Bottomline: Very good buy must be taken if you choose to open the target. Dec. 12 people found this review helpful. Great all around lens for Christopher P. Rodriguez, I'm just a student of photography, so I am unable to technical in my review I bought this lens because like most people, I'm an all-in-one lens desired. A lens that will allow me to take pictures and close family members of shots from a distance would if I was not as close as I want to be. I only had this lens for about a month, but I must say I am very pleased with the lens. With that said, I'm very big on landscape images and not hard to sports or fast action shots. The photos I've taken with this lens so far (about 500) are very crisp and clean shot. I have noticed that the lens can be a bit slow to autofocus, so be careful. If you only plan this lens for sports and / or action shots, you little disappointed. Otherwise, this lens is fantastic! Now I can get rid of my other three lenses that replace the internal lens. 11 of 11 people found the following review helpful. Large in a lens Ryoasuka Pro: 11x so cheap but nice compact size with image quality, slow method when focus loud See all 21 reviews ...