Like all EF-S lenses, this lens is designed to be used only with APS-C bodies like the 7D Mark II, 80D, or Rebel. And if you have one of those cameras, then this is the prefect lens for event shooting. A great focal range, fast f/2.8 aperture throughout and IS to boot. The images are sharp and the contrast is nice as well. It’s not built like an "L" lens but few people are disappointed with it’s performance.
|Focal Length & Maximum Aperture||17-55mm 1:2.8|
|Lens Construction||19 elements in 12 groups|
|Diagonal Angle of View||78°30' - 27°50'|
|Focus Adjustment||AF with full-time manual|
|Closest Focusing Distance||1.15 ft. / 0.35m|
|Zoom System||5-group helical zoom (front group moves: 27mm)|
|Max. Diameter x Length, Weight||3.3 in. x 4.4 in., 22.8 oz. / 83.5mm x 110.6mm, 645g (lens only)