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Overview: The Tamron SP AF28-75mm F/2.8 XR Di (Model A09E) is an accessory
lens, specifically designed for use with Canon digital SLR cameras. It has the
standard Canon EF mount.
SP-Series Lens: Tamron's SP (Super Performance) series is a
line of high performance lenses with high design specifications. This series of
lenses featuring impressive and innovative design are concept models among
Di Lenses: 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.
F/2.8 Fast Zoom: The lens' F2.8 maximum aperture remains
constant throughout the zoom range, even at telephoto. This allows the use of
the same high shutter speed, even when the lens is zoomed to prevent camera
shake and freeze motion.
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 1-1/2"
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 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
- Focal Length: 28-75mm
- Maximum Aperture:
- Minimum Aperture:
- Angle of View:
- Diagonal: 75˚23' -
- Horizontal: 65˚28' -
- Vertical: 46˚15' -
- Lens Construction: 16
elements in 14 groups
- Minimum Focusing Distance:
13" (0.33 meters) across the entire zoom range
- Macro Magnification Ratio: 1:3.9 (at 75mm)
- Filter Size: 67mm
- Length: 3.951"-5.259" (w/
lens caps 4.122"-5.213")
- Diameter: 2.871"
- Weight: 18 ounces (510 grams)