===== Pentax Macro-Takumar 50mm f/4 ===== 
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==== Summary ====
The Takumar 50mm f/4 is a series of legendary manual-focus macro lenses for M42 screw-mount cameras, produced by Asahi Optical Co. in three main variants between 1964 and the early 1970s. All versions share the same 4-element/3-group optical design, optimized for flat-field reproduction and exceptional sharpness—hallmarks of classic macro lenses. This macro lens existed in both Macro-, Super- and Super-Multi-Coated variants. The Macro-Takumar was differently constructed compared to the other, later variants and went out to 1x magnification rather than the 0.5x of the later lenses. The optics are the same for all three variants.
==== Tech Specs ====
| Manufacturer    |Pentax|
| Series          |M42 Series|
| Model           |Macro-Takumar|
| Focal Length    |50mm|
| Max Aperture    |f/4|
| Min Aperture    |f/22|
| Format          |Full-Frame|
| Image Circle    |⌀|
| Minimum Focus   |21cm|
| Focus Rotation  |°|
| Iris Blades     |8|
| Optical Design  |4/3|
| Squeeze         |none|
| Front Diameter  |60mm|
| Filter Thread   |49mm|
| Focus/Zoom Rod  |none|
| Native Mount    |M42|
| Data Protocol   |none|
| Length          |55mm|
| Weight          |265g|
| Body Telescope  |-|
| Body Material   |-|
| Focus Drive     |-|
| Iris Drive      |-|
| Zoom Drive      |-|
==== History ====
Country of Origin: - \\
Release Date: 1964 \\
Launch Price: - \\
Design Revisions:\\

==== Service ====
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Service Manual: (Insert link to manual here) \\
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Full CLA: **#hrs.**\\
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==== Cine-Mod ====
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Focus Ring O.D.: -\\
Zoom Ring O.D.: -\\
Iris Ring O.D.: -\\
De-click Y/N: -\\
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==== Notes ====
==== Media ====