===== Pentax 67 SMC Takumar 400mm f/4 ===== 
{{ :lens:pentax400mm6x7.png?350|}}
==== Summary ====
The Takumar 6×7 400mm f/4—later branded as Super-Takumar and Super-Multi-Coated (S-M-C) Takumar—is a manual-focus super-telephoto lens introduced in 1969 for the Pentax 6×7 medium format system. All three versions share the same optical formula and mechanical design, differing only in coatings and branding. With a diagonal field of view of 12.7°, it was designed for wildlife, sports, and distant landscape photography, offering long reach in a relatively compact form for its class. Optically, it features a 5-element - 5-group design with a 12-blade manual diaphragm, stopping down to f/45. The lens focuses as close as 8 meters, uses rear-mounted 77mm filters, and delivers a 0.0× magnification ratio—emphasizing its role as a reach-focused optic rather than a close-up tool. It includes a built-in sliding hood, tripod collar, and outer bayonet mount. It measures 115 × 287mm, weighs a hefty 2.57kg, and lacks internal focusing, weather sealing, or automatic diaphragm control (unlike the later M* 400 mm f/4 ED [IF]).\\
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__Came in three variants with similar specs:__\\
Takumar 6x7 400mm f/4 in **1969**; Super Takumar 6x7 400mm f/4 in **1971**; Super-Multi-Coated Takumar 6x7 400mm f/4 in **1981**
==== Tech Specs ====
| Manufacturer    |Pentax|
| Series          |67|
| Model           |SMC Takumar|
| Focal Length    |400mm|
| Max Aperture    |f/4|
| Min Aperture    |f/45|
| Format          |6x7|
| Image Circle    |-|
| Minimum Focus   |800cm|
| Focus Rotation  |°|
| Iris Blades     |12|
| Optical Design  |9/9|
| Squeeze         |none|
| Front Diameter  |115mm|
| Filter Thread   |77mm (rear)|
| Focus/Zoom Rod  |none|
| Native Mount    |Pentax 6x7|
| Data Protocol   |none|
| Length          |287mm|
| Weight          |2570g|
| Body Telescope  |-|
| Body Material   |-|
| Focus Drive     |-|
| Iris Drive      |-|
| Zoom Drive      |-|
==== History ====
Country of Origin:  \\
Release Date: 1969 \\
Launch Price:  \\
Design Revisions:  \\

==== Service ====
<nodisp 8>
Service Manual: (Insert link to manual here) \\
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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 ====