Canon EF 8-15mm f/4L Fisheye Ultra-Wide Zoom Lens
Canon has pulled out all the stops for this fisheye lens. It utilizes their latest and greatest optics, including UD glass, subwavelength coating and fluorine coating. The lens captures a 180 degree view, which is rectangular on APS-C sensor cameras but circular on full frame models. The USM designation means the lens uses an ultrasonic motor, so autofocusing is fast and quiet. Full time manual focus is also available at the flip of a switch. A gelatin holder at the back is available for using colored gels. The lens also features a sturdy construction and weighs about 19 ounces.