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PI DATE: June 2008
LENS : EF-S 17-55mm f/2.8 IS USM
FOCAL LENGTH : 17-55mm
MAX. APERTURE: 1:2.8
PICTURE SIZE : 15.1 x 22.7mm
FILTER DIAMETER: 77 mm
DIAGONAL ANGLE OF VIEW: 78 deg 30' 27 deg 50' (27.3mm)
VERTICAL ANGEL OF VIEW: 48 deg 15 deg 40' (15.1mm)
HORIZONTAL ANGLE OF VIEW: 68 deg 40' 23 deg 20' (22.7mm)
LENS CONSTRUCTION : 19 elements in 12 groups
MINIMUM APERTURE : 22
NO. OF DIAPHRAGM BLADES : 7 (circular aperture)
CLOSEST FOCUSING DISTANCE: 0.35m
FOCUS DRIVE : Ring-type USM
WEIGHT : 645g; LENS HOOD: EW-83J
* Std zoom lens for digital SLR cameras - 17 to 55mm focal range,
fast f/2.8 aperture
* High magnification std zoom lens specifically for digital SLR's
that accept EF-S lenses
* Image Stabilizer gives equivalent effect of a shutter speed 3 stops faste
* UD & aspherical elements to reduce aberrations for outstanding image qual
* Inner focus design with ring-type Ultrasonic Motor (USM) for fast &
virtually silent operation
* Circular aperture producing attractive background defocus
* 35cm minimum focus distance at all zoom focal lengths
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