The canon ef 28mm f28 is usm lens is the worlds first wide angle prime with image stabilisation and is an ideal all purpose lens for full frame cameras and features canons classic compact prime design the fast f28 maximum aperture and image stabilisation is enables hand hand photography without the need for flash and permits the use of shutter speeds up to four stops slower than normal a seven bladed circular aperture provides beautiful bokeh while super spectra coatings reduces flare