Canon KH21ex5.7 IRSE SX12 Broadcast Telephoto Lens. 5.7mm to 120mm f/1.4 with built-in 2X teleconverter. Surplus item from a cinema rental company, this lens appears lightly used. I believe this is for 1/2" format HDgc cameras. With the 2x extender, this becomes a 11.4mm to 240mm lens.
Condition: Please see photos. Lens is in very good condition, and optics look clean.