"=====Leica R Summicron Ver II 50mm f/2 ===== 
{{ :lens:50mmf2summicron-rii.jpg?direct&400|}}
==== Summary ====
==== Tech Specs ====
| Manufacturer    |Leica|
| Series          |R|
| Model           |Summicron Ver II|
| Focal Length    |50mm|
| Max Aperture    |f/2|
| Min Aperture    |f/16|
| Format          |-|
| Image Circle    |-|
| Minimum Focus   |0.5m / 19.7 in.|
| Focus Rotation  |-|
| Iris Blades     |6|
| Optical Design  |6/4|
| Squeeze         |none|
| Front Diameter  |-|
| Filter Thread   |E55|
| Focus/Zoom Rod  |-|
| Native Mount    |R|
| Data Protocol   |-|
| Length          |41mm|
| Weight          |290g|
| Body Telescope  |-|
| Body Material   |-|
| Focus Drive     |Manual|
| Iris Drive      |Manual|
| Zoom Drive      |n/a|
==== History ====
Country of Origin: - \\
Release Date: 1976-2009 \\
Launch Price: - \\
Design Revisions:\\

==== Service ====
<nodisp 8>
Service Manual: [[staff:servicedb:Leica-R|Disassembly/Re-assembly]] \\
\\
Full CLA: **5-6 hrs.**\\
<wrap note>Enter relevant notes here</wrap>\\
re-collimate: **2 hrs**\\
<wrap note>remove FER and sunshade/FR to expose lock ring. loosen, check condition of teflon washer underneath, replace teflon as needed, rotate front group. Secure LR with LOTS of glue. let set fully before rotating focus. LR can cause front group to shift. always double check collimation.</wrap>\\
</nodisp>
==== Cine-Mod ====
<nodisp 8>
Focus Ring O.D.: 2.523"\\
Zoom Ring O.D.: N/A\\
Iris Ring O.D.: 2.593"\\
De-click Y/N: Yes\\
Iris Coupling: Yes, **N/A**\\
<wrap note>check lens model and version before confirming if dis-assembly is required. Some versions can be easily accessed under the mount for $50. Some may not be easy to access.</wrap> \\
Additional Notes: \\
</nodisp>
==== Notes ====
==== Media ====