Editor's comment: From the lens currently on the market, the closest thing to this lens is Sony's 16-70mm f/4.0ZA. But because the Sony sensor's conversion factor is 1.5, the lens has an equivalent approach. 24-105mm focal length, its specifications are for practicality after the equivalent. And the specifications of this Canon lens is very unique, and the aperture range of the lens is also very interesting, f / 2.0-5.0 specifications are quite rare. Of course The new lens is just a patent application. As for whether the product will be mass-produced, it has not yet been found. It is worth noting that Canon will introduce more practical lenses on the EF-M lens group. .