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Tamron AF 70-300mm f 4.0-5.6 Di LD Macro Zoom Lens for Pentax Digital SLR Cameras

Tamron AF 70-300mm f 4.0-5.6 Di LD Macro Zoom Lens for Pentax Digital SLR Cameras List Price: $366.55 $152.99 At Amazon on 6-17-2011.

70-300mm telephoto zoom lens Minimum focus distance as short as 37.4" From the Manufacturer Designed for optimum handling ease and portability (it weighs only 458g <16.2oz.> ), it’s ideal for handheld shooting with full-frame and APS-C format SLRs. Its unsurpassed close-focusing ability (down to 0.95m (3.1 feet ) or 1:2 in macro mode) makes it perfect for nature and portrait photography. Zoom in to 300mm from a distance AF 70-300mm f/4.0-5.6 Di LD Macro Zoom Lens Features Low Dispersion (LD) Glass for Greater Lens Sharpness 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 low dispersion 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.)" I own both Canon gear (Canon 40D) and Nikon gear (D40). Since Nikon is my cheaper lighter gear, I am not to invest a lot of $$$ into it. While D40 is light and cheap, it is an excellent camera which I use all the time for many reasons. I needed a tele lens to compliment my kit 18-55 lens (which is excellent in itself and gets great reviews). I was between Tamron 70-300 and Sigma 70-300 APO since Nikon's 70-300 is 4 times more expensive than Tamron and Sigma. After reading tons of reviews and playing with both Tamron and Sigma, I chose Tamron and I am very happy I did. There are several versions of Tamron's 70-300, however this one is the latest, 2008 version, which autofocuses on D40, 40X and 60. This lens is remarkable for the amount it is sold for. I've taken many great photos with it on vacation and around town. It is also very compact and light. While it is not an ideal lens to shoot Birds in Flight (neither is D40 with its 2.5 fps) due to its slow autofocusing mechanism, it is great for general photos and portraits. As you can see from samples I even took some bee shots with it. I took a star because of slow autofocusing, but hey, you are paying $130 for it, realize it. I recommend this lens over Sigma for budget shooters who want 300 tele, but don't want to pay $450 Nikon wants for its version. I am happy with it Back To Top Tamron AF 70-300mm f 4.0-5.6 Di LD Macro Zoom Lens for Pentax Digital SLR Cameras Available from Amazon Price: $152.99 Updated on 6-17-2011.

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