Cooke 15-40mm T2.0 CXX Zoom Lens
You expect and get superior performance and ease of operation from Cooke lenses. The Cooke S4/i 15-40mm CXX zoom lens offers attributes beyond great optical and mechanical performance for 35mm/Super 35mm formats:
New Variable Vignetting Stop
Cooke's new Variable Vignetting Stop allows the high speed CXX lens to maintain T2.0 and high resolution throughout the zoom range. This innovative mechanism adjusts automatically. The benefit to you: no ramping and no flare.
Light and Bright
T2, of course. Light and comparable in size to a Cooke S4/i prime telephoto lens. And like our S4/i telephoto lenses, the CXX zoom offers an extraordinary close focus: Under 7 inches from the front element. And like the Cooke S4/i Primes - no breathing.
| Specifications | |
| Focal Length | 15 – 40mm |
| Zoom Ratio | 2.67:1 |
| T-stop Range | T2 – T22 |
| Maximum f-stop | f/1.84 |
| Maximum Format Covered | 30mm Image Circle (for Super 35 format) |
| Minimum Marked Object Distance | 18 inches / 450mm |
| Close Focus from Lens Front | 6.94 inches / 169mm |
| Diagonal Angle of View for 30mm Image Circle | 90 - 41 degrees |
| Overall Length from Front of Lens to Image Plane | 11.06 inches / 281mm |
| Length from Front of Lens to Lens Mount | 9 inches / 229mm |
| Front Diameter | 136mm (5.35 inches) |
| Lens Mount | PL |
| Total Weight | 7.9 lbs. / 3.6 kg |
| Matte Box Size | 6.6 x 6.6 inches |
| Angular Rotation of Iris | 92 degrees |
| Iris Drive Gear | 134 Teeth 0.8 Metric Module x 2.5mm Wide 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 |