Specifications Focal Length Range 15-40mm T Stop Range T2 - T22 Maximum f Stop f/1.84 Close Focus from Lens Front 6.94 inches / 169mm Length from Front of Lens to Image Plane 11.06 inches / 281mm Minimum Marked Object Distance 18 inches / 450mm Maximum Format Covered 30mm image circle (for Super 35 format) Diagonal Angle of View for 30mm Image Circle 90 - 41 degrees Iris Scales Two opposing scales, whole and third stops marked Iris Scales Two opposing scales, whole and third stops marked Angular Rotation of Iris 92 degrees Iris Drive Gear 134 teeth 0.8 metric module x 2.5mm x 80.5mm from image plane Focus Scales Two opposing focus scales, metric or footage marked from infinity to MOD Angular Rotation from Infinity to MOD Endstop 290 degrees Angular Rotation Between Endstops 300 degrees Focus Drive Gear 153 teeth 0.8 metric module x 6.0mm wide x 223mm from image plane Zoom Scales Two opposing zoom scales Angular Rotation of Zoom Scale 130 degrees Zoom Drive Gear 140 teeth 0.8 metric module x 6.0mm wide x 99mm from image plane Length from Front of Lens to Lens Mount 9 inches / 229mm Front Diameter 136mm Matte Box suggestion Arri LMB4 clip-on matte box Weight 7.9 lbs. / 3.6 Kg ↑back to top

Specifications T-Stop Range (Max f-stop) T3 to T22 (f2.7) Iris Scales Two opposing scales; whole stops marked Angular Rotation of Iris Scale 72 degrees Iris Drive Gear 121 teeth 0.8 metric module Focusing Range from Film Plane 0.7m / 2.3 ft. to infinity Focus Scales Two opposing focus scales - metric or footage. Scales marked from infinity to M.O.D. Minimum Object Distance 2.3 ft. / 700mm Close Focus from Lens Front 1.1 ft. / 328mm Angular Rotation to Marked Close Focus 300 degrees Focus Drive Gear 152 teeth 0.8 metric module Zoom Drive Gear 123 teeth 0.8 metric module Maximum Format Covered 22.05 x 16.03mm (27.2mm diagonal) Horizonital Angle of View Over Maximum Format 63 to 12 degrees Full Frame Object Width at M.O.D. and Maximum Focal Length 92mm Internal Gel Filter Slot 30 x 35mm Internal Glass Filter Slot Accepts two 30.5mm threaded filter Maximum Front Diameter 150mm Clear Aperture Front Glass 120mm Matte Box Size 6.6 x 6.6 in standard Overall Length from Front of Lens to Image Plane 14.65 inches / 372mm Total Weight 12 lbs. / 5.5kg ↑back to top

Specifications T-Stop Range (Max f-stop) T3.7 to T32 (f3.4) Iris Scales Two opposing scales; whole stops marked Angular Rotation of Iris Scale 90 degrees Iris Drive Gear 140 teeth 0.8 metric module Focusing Range from Film Plane 5.5 ft. / 1.7m to infinity Focus Scales Two opposing focus scales - metric or footage. Scales marked from infinity to M.O.D. Minimum Object Distance 5.5 ft. / 700mm Close Focus from Lens Front 4.2 ft. / 1.3mm Angular Rotation to Marked Close Focus 145 degrees Focus Drive Gear 180 teeth 0.8 metric module Zoom Drive Gear 144 teeth 0.8 metric module Maximum Format Covered 22.05 x 16.3mm (27.2mm diagonal) Horizonital Angle of View Over Maximum Format 48 to 4.8 degrees Full Frame Object Width at M.O.D. and Maximum Focal Length 92mm Maximum Front Diameter 150mm Clear Aperture Front Glass 107.3mm Matte Box Size 6.6 x 6.6 in standard Overall Length from Front of Lens to Image Plane 16 inches / 406mm Total Weight 14 lbs. / 6.4kg ↑back to top

The first Cooke video lens for the 21st century created by the pioneers of video lens technology: the S4 HD zoom. Award-winning S4 film lens expertise applied to video has produced a high definition lens for the traditional cinematographer shooting in video. •     Cooke incorporated several features for the professional camera crew: •     Clear calibrated focus scales positioned relative to the focal plane with viewing       windows. •     Easily interchangeable footage and metric focus rings. •     Two opposing focus, zoom and iris scales. •     A novel design incorporating a special cam mechanism for back focus adjustment       ensures that optical and mechanical alignment remains true. A graduated ring allows       precise and smooth adjustment of back focus of +/- 0.4mm. •     The focus and zoom carriages are positioned on precision ball-race mounted rollers for       an accurate, non-rotating movement and smooth, low-torque adjustment. •     Non-pumping internal focus and zoom movements prevent dust intake. •     Cooke's dust-sealed focus and zoom bearings improve reliability and ease of service. •     The S4 HD zoom is supplied with a lens support bracket that adapts onto standard       camera support rails.

Specifications
Zoom Ratio	5.75:1
T-Stop Range	T1.7 to T16, then fully open
Maximum f-stop	f1.46
Iris Scales	Two Opposing Scales, 1/3 Stops Marked
Angular Rotation of Iris	80 degrees between T1.7 and T16 95 degrees to full closed (capped)
Iris Drive Gear	121 Teeth 0.8 Metric Module
Focus Scales	Two Opposing Focus Scales, Metric or Footage
Mechanical Back Focus	48mm (in air)
Optical Back Focus	Color Corrected for 2/3 inch HD Prism
Back Focus Adjustment Range	+/- 0.4mm
Minimum Marked Object Distance	2 ft 6 in. / 0.75m
Close Focus from Lens Front	13 in. / 317mm
Angular Rotation of Focus Gear	326 degrees
Angular Rotation of Zoom Gear	126 degrees
Focus Drive Gear	164 Teeth 0.8 Metric Module
Zoom Drive Gear	123 Teeth 0.8 Metric Module
Maximum Format Covered	11mm Diagonal
Maximum Format Covered	11mm Diagonal
Horizontal Angle of View (16:9)	62 to 12 degrees
Vertical Angle of View (16:9)	36 to 7 degrees
Front Diameter	150mm
Matte Box Size	6.6 in. x 6.6 in.
Overall Length from Front of Lens to Image Plane	17.05 in. / 433mm
Lens Mount	B4 Video
Total Weight	13.2 lbs. / 6 kg.