Features
- Excellent optical quality and true wide-angle coverage with select digital SLRs
- Superior AF performance and speed, with full-time manual focus by simply turning ring
- Close-focusing to 9.5 inches -- fill the frame with subjects as small as 3.6 x 5.4 inches
- Relatively compact size and light weight for an ultra-wide zoom lens
- Inner focusing system (no front element rotation); length doesn't change if zoomed
- Circular aperture design -- natural highlights, even stopped down two stops
- Electronic diaphragm -- manually-set apertures stay constant from f/4.5 thru f/22
- EF-S lens mount -- exclusively for EOS 20D and Digital Rebel bodies