This is a lightweight and compact telephoto lens that keeps the total length to a minimum while having a large aperture with a brightness of f/2.
In general, the power distribution of a lens is held to be a key point to maintaining high performance while making the optical system compact. This lens utilizes a new optical system that appropriately distributes power to disperse it throughout the whole, achieving a large aperture through sufficient correction of spherical aberration in addition to being lightweight and compact.