=====Leica R PC-Super-Angulon 28mm f/2.8 ===== 
{{ :lens:28mmf2.8pc-super-angulon-r.jpg?direct&400|}}
==== Summary ====
The Leica PC-Super-Angulon-R 28mm f/2.8  is a wide-angle perspective-control prime lens for 35 mm Leica R  SLR cameras.

This professional lens is chiefly suitable for architecture photography because it eliminates the converging vertical lines of conventional lenses (see the left photo). Its enlarged image circle of 62 mm and the capability of shifting from the optical axis by up to 11 mm in any direction makes it possible to achieve  more natural images. The mount design permits rotation in 45° steps, which  enables perspective corrections in horizontal, vertical and oblique formats. A special lever stops down the aperture to the preset values. A floating element ensures high imaging performance even into the 30 cm near-focusing range. Angle of view (diagonal) - 73° Manufactured by Schneider-Kreuznach.
==== Tech Specs ====
| Manufacturer    |Leica|
| Series          |R|
| Model           |PC-Super-Angulon|
| Focal Length    |28mm|
| Max Aperture    |f/2.8|
| Min Aperture    |f/22|
| Format          |-|
| Image Circle    |-|
| Minimum Focus   |0.3m / 11.8 in.|
| Focus Rotation  |-|
| Iris Blades     |5|
| Optical Design  |12/10|
| Squeeze         |none|
| Front Diameter  |-|
| Filter Thread   |E67|
| Focus/Zoom Rod  |-|
| Native Mount    |R|
| Data Protocol   |-|
| Length          |84mm|
| Weight          |600g|
| Body Telescope  |-|
| Body Material   |-|
| Focus Drive     |Manual|
| Iris Drive      |Manual|
| Zoom Drive      |n/a|
==== History ====
Country of Origin: - \\
Release Date: 1988-2009 \\
Launch Price: - \\
Design Revisions:\\

==== Service ====
<nodisp 8>
Service Manual: [[staff:servicedb:Leica-R28mmf2.8|Disassembly/Re-assembly]] \\
\\
Full CLA: **4-7hrs.**\\
<wrap note>general pricing for this lens. to be refined after confirmed</wrap>\\
Clean iris blades: **5-8 hrs.**\\
<wrap note>full C+L + 1 hour for iris blades.</wrap>\\ 				
tighten iris (to prevent drift): **NC/.5hrs**\\
<wrap note>No charge for Duclos mod, 1/2 hr labor for non Duclos mod.</wrap>\\				
Re-collimate / T + S internal focus ring: **1-2 hrs.**\\
<wrap note>**GLUE WELL**</wrap>\\
Remove sunshade: **1/2 hr.**\\					
De-click: **$50**\\
<wrap note>WARRANTY: 1 year</wrap>\\				
Coupling: **$50** (unless additional dis-assembly is needed)\\
<wrap note>see focal lengths for details. if no notes are listed, work required is unknown at this time</wrap>\\				
clean IBs: **CLA + 1 hr.**\\
<wrap note>iris mechanism has tiny bearings</wrap>\\
spray and bake threads (teflon coating): **CLA + 1hr.**\\							
Focus scrapes: **2 hrs.**\\
<wrap note>adjust set screws in focus ring and knurled focus ring to reduce distortion. GLUE WELL. open up knurled focus ring on lathe if results can't be improved.</wrap>\\				
knurled focus ring loose: **1/2 hr.**\\
<wrap note>GLUE WELL. drip glue at seam between knurled ring and focus scale for additional security.</wrap>\\				
Iris timing off: **2 hrs.**\\					
</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 ====