===== Kern-Paillard Switar 50mm f/1.4 (for Bolex cameras) ===== 
{{ :lens:20250514_113610.png?300|}}\\
==== Summary ====
A telephoto lens that was available in both standard c-mount and "RX" mount; the standard version (SWIFI) was introduced in 1954, while the RX mount version (DAIFI) was introduced in 1956. It came with a detachable lens shade.
==== Tech Specs ====
| Manufacturer    |Kern-Paillard|
| Series          |-|
| Model           |Switar|
| Focal Length    |50mm|
| Max Aperture    |1.4|
| Min Aperture    |22|
| Format          |-|
| Image Circle    |-|
| Minimum Focus   |3'|
| Focus Rotation  |360|
| Iris Blades     |12|
| Optical Design  |-|
| Squeeze         |-|
| Front Diameter  |-43mm|
| Filter Thread   |-|
| Focus/Zoom Rod  |-|
| Native Mount    |C|
| Data Protocol   |-|
| Length          |2.65"|
| Weight          |-|
| Body Telescope  |-|
| Body Material   |-|
| Focus Drive     |-|
| Iris Drive      |-|
| Zoom Drive      |-|
==== History ====
Country of Origin: \\
Release Date:  1950's\\
Launch Price:  \\
Design Revisions:\\

==== Service ====
<nodisp 8>
Resource info:[[http://www.bolexcollector.com/lenses/50kern.html]]\\
Service Manual: [[staff:servicedb:switarprimes|Disassembly/Re-assembly]] \\
\\
Full CLA: **4-5? hrs.**\\
<wrap note>Enter relevant notes here</wrap>\\
</nodisp>

==== Cine-Mod ====
<nodisp 8>
Focus Ring O.D.: \\
Zoom Ring O.D.: \\
Iris Ring O.D.: \\
De-click Y/N: \\
Mo
unt Conversion: \\
Additional Notes: \\
</nodisp>
==== Notes ====
==== Media ====
{{:lens:screenshot_2026-05-07_7.15.19_am.png?400|}}\\
http://www.bolexcollector.com/\\
http://www.bolexcollector.com/lenses/50kern.html\\