===== Pentax-A SMC 24-50mm f/4 ===== 
{{ :lens:pentax-a_smc_24-50mm_f4.png?250|}}
==== Summary ====
The SMC Pentax-A 24–50mm f/4 is a compact manual-focus zoom lens introduced in 1984, designed for the Pentax KA mount. It features a constant f/4 aperture across its wide-to-standard zoom range, making it a versatile option for landscape, street, and general-purpose photography. Optically, it uses a 9-element, 7-group design with Super Multi-Coating (SMC) to reduce flare and improve contrast. The lens includes a 6-blade automatic diaphragm, stops down to f/22, and supports 58 mm filters. It focuses down to 0.3 meters, achieving a 0.21× magnification ratio, and weighs 285g, with a compact length of 66mm, making it well-balanced on both film and digital bodies.
==== Tech Specs ====
| Manufacturer    |Pentax|
| Series          |A Series Zoom|
| Model           |SMC|
| Focal Length    |24-50mm|
| Max Aperture    |f/4|
| Min Aperture    |f/22|
| Format          |Full-Frame|
| Image Circle    |-|
| Minimum Focus   |40cm|
| Focus Rotation  |°|
| Iris Blades     |8|
| Optical Design  |11/10|
| Squeeze         |none|
| Front Diameter  |64mm|
| Filter Thread   |58mm|
| Focus/Zoom Rod  |none|
| Native Mount    |Pentax K|
| Data Protocol   |none|
| Length          |68mm|
| Weight          |375g|
| Body Telescope  |-|
| Body Material   |-|
| Focus Drive     |-|
| Iris Drive      |-|
| Zoom Drive      |-|
==== History ====
Country of Origin:  \\
Release Date: 1984 \\
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 ====