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Tamron 28 to 75 millimeter f2.8 XR Di Canon lens. Amazon.com Product Description:
Tamron applies the Di (Digitally Integrated) logo to lenses with optical systems designed to meet the performance characteristics of digital SLR cameras, and this 28-75mm Di autofocus zoom lens is no exception. Boasting revolutionary downsizing XR technology, the lens is among the smallest and lightest models in the history of fast zoom lenses. In fact, it looks just like an ordinary standard zoom lens, but offers a fast constant maximum aperture that will reshape your photographic horizons. Specific details include a constant maximum aperture of f/2.8, a minimum focusing distance of 13 inches, and a rotation-type zoom. As with all Tamron lenses, the 28-75mm lens carries a six-year warranty. - Lens construction: 16 elements in 14 groups
- Angle of view: 75 to 32 degrees
- Zooming type: Rotation
- Diaphragm blade number: 7
- Minimum aperture: f/32
- Minimum focusing distance: 13 inches
- Macro magnification ratio: 1:3.9 (at 75mm)
- Filter diameter: 67mm
- Accessories: Lens hood
- Mount: Canon, Nikon, Pentax, Sony
- Dimensions: 2.9 inches in diameter and 3.6 inches long
- Weight: 18 ounces
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