The Helios 35mm-135mm f3.5-f4.5 is an wide angle to telephoto zoom lens that has a nice 70s look and a lot of flexibility to compose shots.
This lens is natively an M42 mount, but has been adapted to EF. The lens is known for having swirly bokeh and rippling flares. This lens was made in Japan, but originally, Helios lenses began in Russia.
This lens covers Full Frame, Super 35mm and m4/3 digital sensors.