The EF 24mm f2.8 IS USM lens is the world's first wide-angle prime with Image Stabilisation and features a fast f/2.8 maximum aperture that is perfect for landscape, travel and documentary photography. Canon's Image Stabilisation allows the use of shutter speeds up to four stops slower than usual and the USM (Ultrasonic Motor) provides fast, near-silent focusing with full-time manual focus override for fine adjustment without changing focus modes. A seven-bladed circular aperture provides beautiful bokeh, while Super Spectra coatings reduce flare. The Canon EF 24mm f/2.8 IS USM's classic prime-lens design minimises distortion and aberrations, which can degrade image quality. Weighing in at just 280g and measuring 68.4mm x 55.7mm, the Canon EF 24mm f/2.8 IS USM is a great low-light performer that you can take with you everywhere. This lens is suitable for use with both full-frame and cropped sensor (APS-C) cameras.