Key Canon lens technology

Canon is the world leader in lens technology and development. It was the first manufacturer to develop the Electronic Focusing lens, Ultra Sonic Motors and Image Stabilization built into the lens body. These innovations have ensured the photographer has greater control and flexibility and they have become the expected standard for DSLR lenses today.
Feature Models Advantage Benefit Photographic use
Aspherical Elements EF lens range Curved and tapered shaping Light information does not get lost and images are sharp from middle to edge For everyday photography
IS (Image Stabilizer) All Canon lenses with IS in the model number Any camera movement is counteracted Blur-free images coming through the lens Primarily sports/action photography
USM (Ultra Sonic Motor) All Canon lenses with USM at the end of the model number In-lens motor to control focusing High speed focusing is achieved Particularly useful where fast focusing is essential
Dust and Water resistant L series lenses Less risk of water/ dust contamination or damage Camera remains functional and dust free Ideal for holidays and areas where levels of moisture/dust exist
Fluorite UD Glass elements EF 70-200 F4L (Red Ring) L series e.g. EF 24-70mm F2.8L Additional lens elements in professional lenses Ultra high quality management of light passing through the lens ensuring optimum image capture Professional e.g. sports, studio etc.
Multilayered DO Lens Smaller and lightweight lenses. E.g. EF 400mm f/4 DO IS USM (Green Ring) ‘Diffractive Optics’ - Canon lenses which utilize a unique diffraction grating to control chromatic aberration and reduce lens size and weight. Outstanding quality of glass element coating ensuring almost all light is used, thus producing superior image quality These high-quality compact lenses are ideal for travel & wildlife photography.

 
next page