===== Pentax-M SMC 50mm f/2 ===== 
{{ :lens:pentax-m_smc_50mm_f2.png?250|}}
==== Summary ====
The SMC Pentax-M 50mm f/2 is a compact, manual-focus standard prime lens for Pentax K-mount 35mm and full-frame digital SLRs, produced from 1979 to 1985. It features a simple 5-element/5-group optical design, a 6-blade automatic diaphragm, and Pentax’s Super Multi-Coating (SMC) for improved contrast and flare resistance. With a maximum aperture of f/2, it offers decent low-light performance and shallow depth-of-field, while delivering solid sharpness and pleasing bokeh—especially when stopped down. The lens focuses down to 0.45m, uses a 49mm filter thread, and weighs just 160g in a compact 63 × 31mm all-metal barrel (early versions). Later production runs used plastic components from the A-series to reduce cost, resulting in a lighter 138g version with a slightly different aperture mechanism. Though often dismissed as a budget “kit lens,” it remains a surprisingly capable and affordable entry point into vintage Pentax glass.
==== Tech Specs ====
| Manufacturer    |Pentax|
| Series          |M Series Prime|
| Model           |SMC|
| Focal Length    |50mm|
| Max Aperture    |f/2|
| Min Aperture    |f/22|
| Format          |Full-Frame|
| Image Circle    |-|
| Minimum Focus   |45cm|
| Focus Rotation  |°|
| Iris Blades     |6|
| Optical Design  |5/5|
| Squeeze         |none|
| Front Diameter  |63mm|
| Filter Thread   |49mm|
| Focus/Zoom Rod  |none|
| Native Mount    |Pentax K|
| Data Protocol   |none|
| Length          |31mm|
| Weight          |160g|
| Body Telescope  |-|
| Body Material   |-|
| Focus Drive     |-|
| Iris Drive      |-|
| Zoom Drive      |-|
==== History ====
Country of Origin:  \\
Release Date: 1979 \\
Launch Price:  \\
Design Revisions:  \\

==== Service ====
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Service Manual: (Insert link to manual here) \\
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Full CLA: **TBD hrs.**\\
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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 ====