===== Pentax-A SMC 50mm f/2 ===== 
{{ :lens:pentax-a_smc_50mm_f2.png?300|}}
==== Summary ====
The SMC Pentax-A 50mm f/2 is a compact, manual-focus standard prime lens introduced in 1985 and produced until 1998, designed for full-frame K-mount film cameras and fully compatible with modern Pentax DSLRs. It was marketed as a budget kit lens during the rise of auto-exposure bodies, offering a lower-cost alternative to the faster f/1.7 and f/1.4 options. Optically, it features a 5-element/5-group design, a 6-blade automatic diaphragm, and Super Multi-Coating (SMC) for improved contrast and flare resistance. The lens focuses down to 45cm, delivers 0.15× magnification, and uses a 49mm filter thread. It weighs just 145g, measures 63 × 31mm, and includes an “A” setting on the aperture ring, enabling full program and shutter-priority modes on compatible Pentax bodies.
==== Tech Specs ====
| Manufacturer    |Pentax|
| Series          |A 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          |145g|
| Body Telescope  |-|
| Body Material   |-|
| Focus Drive     |-|
| Iris Drive      |-|
| Zoom Drive      |-|
==== History ====
Country of Origin:  \\
Release Date: 1985 \\
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: \\
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==== Notes ====
==== Media ====