===== Pentax-A SMC 135mm f/2.8 ===== 
{{ :lens:pentax-a_smc_135mm_f2.8.png?250|}}
==== Summary ====
The SMC Pentax-A 135mm f/2.8 is a manual-focus short telephoto prime introduced in 1983 and produced until 1989, designed for full-frame K-mount film cameras. It was part of the A-series, offering full aperture automation via the "A" setting-making it more convenient than its M-series predecessor while retaining classic Pentax build quality. It features a 4-element - 4-group optical design, Super Multi-Coating (SMC), and an 8-blade automatic diaphragm. The lens stops down to f/32, focuses as close as 1.2 meters, and delivers 0.15× magnification. It uses a 52mm filter thread, weighs 340g, and measures 65 × 77mm. It includes a built-in sliding hood, plastic clip-on cap, and was often sold with the HB-120 hard case. Autofocus is manual only, and there’s no internal focusing or weather sealing.
==== Tech Specs ====
| Manufacturer    |Pentax|
| Series          |A Series Prime|
| Model           |SMC|
| Focal Length    |135mm|
| Max Aperture    |f/2.8|
| Min Aperture    |f/32|
| Format          |Full-Frame|
| Image Circle    |-|
| Minimum Focus   |120cm|
| Focus Rotation  |°|
| Iris Blades     |8|
| Optical Design  |4/4|
| Squeeze         |none|
| Front Diameter  |65mm|
| Filter Thread   |52mm|
| Focus/Zoom Rod  |none|
| Native Mount    |Pentax K|
| Data Protocol   |none|
| Length          |77mm|
| Weight          |340g|
| Body Telescope  |-|
| Body Material   |-|
| Focus Drive     |-|
| Iris Drive      |-|
| Zoom Drive      |-|
==== History ====
Country of Origin:  \\
Release Date: 1983 \\
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 ====