The 2/3 inch portable 4K UHD lens Canon CJ25ex7.6B has a 25x zoom ratio and a focal length from 7.6-190mm that can be extended by 2x. Even with the maximum focal length, this will let you have a full 4K resolution across the entire focal range.

Moreover, the lens has been built to reduce chromatic aberration, ghosting, and flare in order to have better image quality and color reproduction.
The CJ25 is built with a digital drive unit and has a 16-bit encoder which is compatible with 2/3″ professional cameras.
Ergonomic, compact with a light mass of 1,99 kg, this 4K broadcast lens is ideal for on-the-shoulder shootings