===== Pentax-A* SMC 400mm f/2.8 ED [IF] ===== 
{{ :lens:pentax-astar_smc_400mm_f2.8_ed_if_.png?350|}}
==== Summary ====
This immense lens is two stops faster than its standard A version, but it is also 5 times heavier, weighing in at 6kg.
==== Tech Specs ====
| Manufacturer    |Pentax|
| Series          |A* Series Prime|
| Model           |SMC|
| Focal Length    |400mm|
| Max Aperture    |f/2.8 ED [IF]|
| Min Aperture    |f/32|
| Format          |Full-Frame|
| Image Circle    |-|
| Minimum Focus   |450cm|
| Focus Rotation  |°|
| Iris Blades     |8|
| Optical Design  |8/8|
| Squeeze         |none|
| Front Diameter  |165mm|
| Filter Thread   |145mm, 49mm rear|
| Focus/Zoom Rod  |none|
| Native Mount    |Pentax K|
| Data Protocol   |none|
| Length          |325mm|
| Weight          |6000g|
| Body Telescope  |-|
| Body Material   |-|
| Focus Drive     |-|
| Iris Drive      |-|
| Zoom Drive      |-|
==== History ====
Country of Origin:  \\
Release Date: 1986 \\
Launch Price:  \\
Design Revisions:  \\

==== Service ====
<nodisp 8>
Service Manual: (Insert link to manual here) \\
\\
Full CLA: **TBD hrs.**\\
<wrap note></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 ====