===== Pentax-A* SMC 200mm f/4 Macro ED ===== 
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==== Summary ====
The SMC Pentax-A* 200mm f/4 Macro ED is a legendary manual-focus macro lens introduced in 1984 for the Pentax K-mount, and produced until 2000. It was the only A*-series macro lens ever made, and remains one of the most revered optics in the Pentax lineup—designed for true 1:1 reproduction with a long working distance, making it ideal for insects, flowers, and studio macro work where subject distance and lighting flexibility are critical. Optically, it features a 10-element - 9-group design, including one ED (Extra-low Dispersion) element to minimize chromatic aberration. The lens stops down to f/32, focuses as close as 55cm, and delivers 1.0× magnification without extension tubes. It uses a 58mm filter thread, weighs 895g, and measures 71 × 145mm. The lens includes a built-in sliding hood, tripod collar, and a manual aperture ring with “A” setting for full automation on compatible bodies. There’s no internal focusing, but the lens employs a fixed rear-element extension (FREE) design to maintain optical alignment throughout the focus range.
==== Tech Specs ====
| Manufacturer    |Pentax|
| Series          |A* Series Macro|
| Model           |SMC|
| Focal Length    |200mm|
| Max Aperture    |f/4 ED|
| Min Aperture    |f/32|
| Format          |Full-Frame|
| Image Circle    |-|
| Minimum Focus   |55cm|
| Focus Rotation  |°|
| Iris Blades     |8|
| Optical Design  |10/9|
| Squeeze         |none|
| Front Diameter  |71mm|
| Filter Thread   |58mm|
| Focus/Zoom Rod  |none|
| Native Mount    |Pentax K|
| Data Protocol   |none|
| Length          |145mm|
| Weight          |895g|
| 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 ====
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Focus Ring O.D.: -\\
Zoom Ring O.D.: -\\
Iris Ring O.D.: -\\
De-click Y/N: -\\
Additional Notes: \\
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==== Notes ====
==== Media ====