The Sirui Jupiter 28-85mm T3.2 FF Cine Zoom (Canon EF) is zoom Cine lens designed for full frame cameras with a Canon EF mount. With a 44mm image circle, the lens can be used on full frame or large format cameras. It has a zoom range from wide angle to medium telephoto. The lens has a resolution of 8k and takes very sharp images. 

With a 3X ration zoom lens it covers multiple popular focal lengths. The images are sharp, and the lens is parfocal, so the focus does not change during zooming. 

It has a maximum aperture of T3.2 and a minimum focusing distance of 0.7m. It is composed of 22 elements in 8 groups. They also have an iris of 11 blades for a nice round bokeh. The lenses give nice flares and have a vintage hazy look. 

They further have minimal chromatic aberrations and focus breathing. 

The length of the lens is 223mm, it weighs 2536g and has a filter thread of.