===== Pentax SMC 28mm f/3.5 ===== 
{{ :lens:pentax_smc_28mm_f3.5.png?300|}}
==== Summary ====
The SMC Pentax 28mm f/3.5 is a high-performance manual-focus wide-angle prime lens for Pentax K-mount 35mm and full-frame digital SLRs, produced from 1976 to 1977. It features an 8-element/7-group optical design with Pentax’s Super Multi-Coating (SMC) for excellent contrast, color fidelity, and flare resistance. Though slower than its f/2 sibling, it’s widely regarded as the sharper of the two, delivering edge-to-edge sharpness and minimal chromatic aberration—especially when stopped down to f/8. The lens includes a 5-blade automatic diaphragm, a close-focus distance of 0.3m, and a 52mm filter thread. It weighs 261g and measures 63 × 47mm in a solid all-metal barrel engraved smc PENTAX 1:3.5/28. With a 75° diagonal field of view on full-frame, it’s ideal for landscapes, architecture, and street photography. Though relatively rare, it remains a cult favorite among Pentax enthusiasts for its optical precision, compact build, and classic rendering. The SMC Pentax 28mm F3.5 is the slower of the two K-series 28mm wide-angle lenses, with the Pentax 28mm F2 being the faster, larger, and more expensive option.
==== Tech Specs ====
| Manufacturer    |Pentax|
| Series          |K Series Prime|
| Model           |SMC|
| Focal Length    |28mm|
| Max Aperture    |f/3.5|
| Min Aperture    |f/22|
| Format          |Full-Frame|
| Image Circle    |-|
| Minimum Focus   |30cm|
| Focus Rotation  |°|
| Iris Blades     |5|
| Optical Design  |8/7|
| Squeeze         |none|
| Front Diameter  |63mm|
| Filter Thread   |52mm|
| Focus/Zoom Rod  |none|
| Native Mount    |Pentax K|
| Data Protocol   |none|
| Length          |47mm|
| Weight          |261g|
| Body Telescope  |-|
| Body Material   |-|
| Focus Drive     |-|
| Iris Drive      |-|
| Zoom Drive      |-|
==== History ====
Country of Origin:  \\
Release Date: 1976 \\
Launch Price:  \\
Design Revisions:  \\

==== Service ====
<nodisp 8>
Service Manual: (Insert link to manual here) \\
\\
Full CLA: **TBD hrs.**\\
<wrap note></wrap>\\
</nodisp>
==== 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 ====