===== Pentax 67 SMC Takumar 90mm f/2.8 Leaf Shutter ===== 
{{ :lens:pentax90mm6x7f2.8ls.png?250|}}
==== Summary ====
The SMC Takumar 6×7 90mm f/2.8 Leaf Shutter (LS) is a unique normal prime introduced in 1971 for the Pentax 6×7 medium format system. It was the first lens in the lineup to feature a built-in leaf shutter, enabling high-speed flash synchronization up to 1/500 sec—a major advantage for studio and outdoor fill-flash work. This lens was produced until 1980, when it was replaced by a non-leaf-shutter version. Optically, it uses a 6-element - 5-group design with Super-Multi-Coating (SMC) and a 5-blade automatic diaphragm. It stops down to f/22, focuses as close as 85cm, and delivers 0.14× magnification. It uses a 67mm filter thread (screw-in or bayonet), weighs 610g, and measures 91.5 × 63mm. The lens includes a U/S lever to toggle between “Usual” and “Special” modes, a shutter speed ring (1/30 to 1/500 sec), a flash sync terminal, and a cable release socket for triggering the leaf shutter independently. It ships with a metal bayonet cap, and was often paired with a dedicated close-up filter (S82) for improved near-focus performance.
==== Tech Specs ====
| Manufacturer    |Pentax|
| Series          |67|
| Model           |SMC Takumar|
| Focal Length    |90mm|
| Max Aperture    |f/2.8 LS|
| Min Aperture    |f/22|
| Format          |6x7|
| Image Circle    |-|
| Minimum Focus   |85cm|
| Focus Rotation  |°|
| Iris Blades     |5|
| Optical Design  |6/5|
| Squeeze         |none|
| Front Diameter  |91.5mm|
| Filter Thread   |67mm|
| Focus/Zoom Rod  |none|
| Native Mount    |Pentax 6x7|
| Data Protocol   |none|
| Length          |63mm|
| Weight          |610g|
| Body Telescope  |-|
| Body Material   |-|
| Focus Drive     |-|
| Iris Drive      |-|
| Zoom Drive      |-|
==== History ====
Country of Origin:  \\
Release Date: 1971 \\
Launch Price:  \\
Design Revisions:  \\

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