The Canon EF 300mm f/4L IS USM Lens provides photographers with great quality images which are affordable compared to other L-series lenses in this focal range. The Canon 300mm f4L includs the much desired IS (image stabilizer) and USM for fast and sharp focusing. The IS system used in this lens has two modes, the second steadies the image in horizontal or vertical panning. UD (ultra-low dispersion) elements to minimise aberrations and maintain great image quality.
