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Overview: The Tamron AF
28-300mm F/3.5-6.3 XR Di LD Aspherical IF Macro (Model A20N2) is an accessory
lens, specifically designed for use with Nikon digital SLR
cameras. It has the standard Nikon bayonet-type mount. This lens covers a broad range of
focal lengths, from a wide 28mm to a super telephoto 300mm (the 35mm equivalent
of 43mm to 465mm when used on an APS-C digital SLR.)
Compatibility: This lens is compatible with Nikon digital
SLR cameras, including the following models: D40, D50, D60, D70, D80, D200, and
Di Lens: Tamron Di (Digitally Integrated Design) lenses are
designed to fit the characteristics of digital cameras as well as film cameras
by paying attention to countermeasures against ghosting and flare through such
advances as special coatings.
Vibration Compensation (VC): The lens is equipped with a Vibration
Compensation mechanism which reduces the image blur caused by hand-held
shooting, especially at maximum zoom. Blurry pictures can also be the result of
shooting in dimly lit locations, or where flash photography is forbidden. When
using the VC feature, pictures can be taken at shutter speeds up to a maximum of
4 stops slower than the speed when the VC isn't used. The VC feature can be
turned on/off with a switch on the barrel of the lens.
Optical Features: This lens has
the following optical features:
- Aspherical Elements (ASL): The use of Tamron's exclusive Hybrid Aspherical elements provides the
ultimate in compactness and image quality.
- Low Dispersion Glass (LD):
The use of Low Dispersion (LD) glass elements greatly reduces the effect of
chromatic aberration, a form of optical noise, and dramatically increases
- Internal Focusing (IF): Tamron's Internal Focusing System enhances lens maneuverability and reduces
the Minimum Focus Distance (M.F.D.) throughout its entire focal length.
- Extra Refractive Glass (XR): Through the innovative use of XR (Extra Refractive Index) glass, the overall
size (diameter and barrel length) of the lens was reduced, while maintaining
the same aperture values as previous lenses.
Lens Hood: A bayonet-type lens
hood is provided with the lens. The lens hood prevents stray light from entering
the lens, which can be harmful to the picture. When not in use, the lens hood
can be inverted and stored on the lens. The lens hood adds approximately 1-5/8"
length to the lens.
Note: Using the camera's built-in flash with the lens
hood in place can cause shadows to appear on the image.
Focus Modes: The lens features a built-in Auto-Focus motor. The lens can be
used in either Automatic or Manual Focus modes. When you switch the camera to
manual focus, you can focus on your subject by rotating the focus ring on the
Manual Zoom: You can manually
zoom in or out by rotating the zooming ring of the lens while viewing your
subject through the camera's viewfinder and compose your image at the chosen
Zoom Lock: The lens has a switch mechanism that prevents the lens from
extending toward long focal length by its own weight while hanging from your
shoulders. The lock must be activated at the 28mm position.
- Focal Length: 28-300mm
- Maximum Aperture: F/3.5-F/6.3 (28-300mm)
- Minimum Aperture:
- Angle of View: 75°23' - 8°15'
- Lens Construction: 18
elements in 13 groups
- Minimum Focusing Distance: 19.3" (0.49 meters)
- Maximum Magnification Ratio: 1:3 (at f=300mm, MFD=0.49m)
- Filter Size: 67mm
- Length: 4.305"-7.455"
- Diameter: 3.065"
- Weight: 19.6 ounces