The Canon EF 24-70mm f/4 L is usm is a standard lens for medium-high quality cameras produced starting from the year 2012 by the famous Japanese company. It is characterized by a focus via ultrasound AF engine and an integrated automatic image stabilization and immediately was evaluated as an excellent substitute for the much more expensive EF 24-70mm f/2.8L II USM and from which it differs in a slightly lower brightness as well as its weight, its length and above all for the most affordable price to a vast customers. The minimum distance of focus is about 38 centimeters and is immediate thanks to the use of an ultrasonic AF engine that makes this slow for anyone who loves to do < B> close photographs and not at a distance since the maximum possible magnification is of 0.7x . Finally, thanks to the four -stop image stabilizer, the Panning is automatically detected (the acquisition of moving objects by keeping the form of dynamism). To underline also the high level reached in the materials and in the numerous seals that keep it safe from any infiltrations of water and dust. The only point of disadvantage can be represented by its weight equal to about 600 grams that do not make it particularly easy to handle even if it does not preclude an optimal and appreciable use. In addition to the Canon EF 24-70 mm lens f/4 L IS Usm , there are also numerous accessories such as an e-77 II lens cover, an LP1219 case, an EW-83 l and two hunt extensions or EF12 II (0.40 - 1.18) and EF25 II (0.72 - 0.40). This lens is perfectly compatible with the reflex fullframe and asp-c Canon EF .