=====Cooke S5/i 40mm T1.4 ===== 
{{ :lens:4260-10061m.jpg?400|}}
==== Summary ====
See in the dark like never before with T1.4 speed and a focus ring that illuminates when you need it. Harness the visibility you need without affecting the light coming into the camera, allowing you to get the perfect shot each time.
==== Tech Specs ====
| Manufacturer    |Cooke|
| Series          |S5/i|
| Model           |-|
| Focal Length    |40mm|
| Max Aperture    |T1.4|
| Min Aperture    |T22|
| Format          |Super 35|
| Image Circle    |30mm|
| Minimum Focus   |16 in.|
| Focus Rotation  |270|
| Iris Blades     |7|
| Optical Design  |-|
| Squeeze         |none|
| Front Diameter  |110mm|
| Filter Thread   |none|
| Focus/Zoom Rod  |none|
| Native Mount    |PL|
| Data Protocol   |Cooke/i|
| Length          |7 in.|
| Weight          |2754 g|
| Body Telescope  |none|
| Body Material   |Aluminum|
| Focus Drive     |Manual|
| Iris Drive      |Manual|
| Zoom Drive      |n/a|
==== History ====
Country of Origin: UK \\
Release Date:  \\
Launch Price:  \\
Design Revisions:\\

==== Service ====
<nodisp 8>
Service Manual: [[staff:servicedb:s5i|Disassembly/Re-assembly]] \\
\\
**AVOID REPAIRS WHEN POSSIBLE. EVEN COOKE DOES NOT OFFER SUPPORT FOR THESE LENSES ANYMORE.**\\
\\
Full CLA: **10 hrs.**\\
<wrap note>Enter relevant notes here</wrap>\\
C+L (without optics): **8 hrs.**\\
Re-calibrate data: **1 hr.**\\					
Reset focus stop: The 5/i's hard stop at infinity like most Cooke lenses except for the 180mm and 300mm	\\
</nodisp>

==== Notes ====
==== Media ====
{{ :lens:cooke_5i-s35_specification_030623.pdf |}}