=====Leica M Tri-Elmar ASPH 16-18-21mm f/4 ===== 
{{ :lens:leica-tri-elmar-16-18-21-f4-asph.png?direct&400|}}
==== Summary ====
==== Tech Specs ====
| Manufacturer    |Leica|
| Series          |M|
| Model           |Tri-Elmar ASPH|
| Focal Length    |16-18-21mm|
| Max Aperture    |f/4|
| Min Aperture    |f/22|
| Format          |Full Frame|
| Image Circle    |-|
| Minimum Focus   |1.64ft|
| Focus Rotation  |-|
| Iris Blades     |-|
| Optical Design  |10/7|
| Squeeze         |none|
| Front Diameter  |-|
| Filter Thread   |-|
| Focus/Zoom Rod  |-|
| Native Mount    |M|
| Data Protocol   |none|
| Length          |2.4in|
| Weight          |335g|
| Body Telescope  |-|
| Body Material   |-|
| Focus Drive     |Manual|
| Iris Drive      |Manual|
| Zoom Drive      |-|
==== History ====
Country of Origin: Germany \\
Release Date: 2006- \\
Launch Price: - \\
Design Revisions:\\

==== Service ====
<nodisp 8>
Service Manual: (Insert link to manual here) \\
\\
Full CLA: **#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: -\\
Additional Notes: \\
</nodisp>
==== Notes ====
==== Media ====