The Cooke S7/i Prime Lenses are designed to cover full frame cinema camera sensors up to at least the full sensor area of the RED Weapon 8K (46.31mm image circle). It is color-matched to other Cooke lenses to keep that well-known Cooke look, and has focus markings on both sides of the lens. A cam-type focus mechanism with a large lens barrel diameter and 270° of rotation from end-stop to end-stop allows for precision focus markings, especially at close focus.