===== Pentax SMC 30mm f/2.8 =====
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==== Summary ====
The SMC Pentax 30mm f/2.8 is a rare and distinctive manual-focus wide-angle prime introduced in 1975 and produced until 1984, designed for full-frame K-mount film cameras. It holds the unique distinction of being the only 30mm prime lens ever made by Pentax, sitting between the more common 28mm and 35mm focal lengths. With a 7-element/7-group optical design, Super Multi-Coating (SMC), and a 5-blade automatic diaphragm, it delivers a 72° diagonal field of view on full-frame (or ~51° on APS-C), making it a versatile option for street, landscape, and general-purpose photography. The lens focuses down to 30cm, offers 0.13× magnification, and uses a 52mm filter thread. It weighs 215g, measures 63 × 39.5mm, and includes a dedicated PH-S52 hood and hard case. There are two cosmetic variants—one engraved SMC PENTAX 1:2.8/30 and the other smc PENTAX 1:2.8 30mm—but both are optically identical. It lacks an “A” setting on the aperture ring, so it’s best used in manual or aperture-priority modes on modern digital bodies.
==== Tech Specs ====
| Manufacturer |Pentax|
| Series |K Series Prime|
| Model |SMC|
| Focal Length |30mm|
| Max Aperture |f/2.8|
| Min Aperture |f/22|
| Format |Full-Frame|
| Image Circle |-|
| Minimum Focus |30cm|
| Focus Rotation |°|
| Iris Blades |5|
| Optical Design |7/7|
| Squeeze |none|
| Front Diameter |63mm|
| Filter Thread |52mm|
| Focus/Zoom Rod |none|
| Native Mount |Pentax K|
| Data Protocol |none|
| Length |39.5mm|
| Weight |215g|
| Body Telescope |-|
| Body Material |-|
| Focus Drive |-|
| Iris Drive |-|
| Zoom Drive |-|
==== History ====
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Release Date: 1975 \\
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==== Service ====
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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De-click Y/N: -\\
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==== Notes ====
==== Media ====