===== Pentax-M SMC 35-70mm f/2.8-3.5 ===== 
{{ :lens:pentax-m_smc_35-70mm_f2.8-3.5.png?200|}}
==== Summary ====
The SMC Pentax-M 35–70mm f/2.8–3.5 is a fast, manual-focus standard zoom introduced in 1979 and produced until 1984, designed for full-frame K-mount film cameras. It was the brightest zoom lens in the Pentax-M lineup and remains one of the most highly regarded vintage Pentax zooms—offering a rare combination of speed, sharpness, and mechanical precision in a compact form. Optically, it features a 7-element - 7-group design with Super Multi-Coating (SMC) and a 7-blade automatic diaphragm. The lens offers a constant f/2.8 aperture at 35mm, tapering to f/3.5 at 70mm, and stops down to f/22–26 depending on focal length. It focuses as close as 1 meter, uses a 58mm filter thread, and weighs 470g, measuring 67 × 76mm. The lens employs a one-touch push-pull zoom/focus ring, lacks an “A” setting on the aperture ring, and includes a dedicated MH-R metal hood and hard case.
==== Tech Specs ====
| Manufacturer    |Pentax|
| Series          |M Series Zoom|
| Model           |SMC|
| Focal Length    |35-70mm|
| Max Aperture    |f/2.8-3.5|
| Min Aperture    |f/22-26|
| Format          |Full-Frame|
| Image Circle    |-|
| Minimum Focus   |100cm|
| Focus Rotation  |°|
| Iris Blades     |7|
| Optical Design  |7/7|
| Squeeze         |none|
| Front Diameter  |67mm|
| Filter Thread   |58mm|
| Focus/Zoom Rod  |none|
| Native Mount    |Pentax K|
| Data Protocol   |none|
| Length          |76mm|
| Weight          |470g|
| Body Telescope  |-|
| Body Material   |-|
| Focus Drive     |-|
| Iris Drive      |-|
| Zoom Drive      |-|
==== History ====
Country of Origin:  \\
Release Date: 1979 \\
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 ====