The Canon EF 24-70mm f/2.8 l USM II is a lens for professional use for FF and APS-C format, capable of guaranteeing an exceptional level of image and an opening of the diaphragm equal to f/2.8. As per tradition for the Japanese factory, the lens offers very high performance and is a security in quality terms. The product has a high yield in terms of sharpness, brilliance of colors and chromatic loyalty. Aimed at professionals and adventure photographers, it is particularly suitable for working "quickly" thanks to its lightning -free AF ​​as well as to immortalize memorable portraits. Its focal aperture allows excellent results in low lighting conditions since it takes advantage of the light available in the environment in full: it has a diaphragm to 9 lamellae which also allows, with very low lighting, an excellent rendering of the subject in the foreground that stands out in the colors thanks also to the blurred backgrounds and perfect bokehs obtainable. The Canon EF 24-70mm f/2.8 l USM II is equipped with three asferic lenses: an aspheric lens is a component placed within the structure of the product which, thanks to its non-rounded shape, allows to reset the distortions produced by others spherical elements of the lens. This feature allows a strong reduction in chromatic aberration in order to obtain very sharp images. Lightning autofocus is possible thanks to the ultrasonic engine. The Canon EF 24-70mm f/2.8 l USM II represents one of the best choices in circulation for highly professional and conscious use, capable of repaying the investment with results of the highest value. The only flaw found is the lack of a stabilizer that would probably have made it a perfect product.