===== Pentax-A SMC 28-80mm f/3.5-4.5 ===== 
{{ :lens:pentax-a_smc_28-80mm_f3.5-4.5.png?250|}}
==== Summary ====
The SMC Pentax-A 28-80mm f/3.5–4.5 is a manual-focus standard zoom lens introduced in the mid-1980s for the Pentax K-mount, designed as a versatile walkaround option for film SLRs. It was one of the few zooms in the A-series to receive Super Multi-Coating (SMC) and a more advanced 12-element - 9-group optical design, distinguishing it from the simpler, non-SMC Takumar-A and Pentax-A variants that shared the same focal range. The lens features a variable aperture from f/3.5 to f/4.5, stopping down to f/22–32, and uses a 5-blade automatic diaphragm. It focuses as close as 80cm, delivering a modest magnification ratio, and uses a 58mm filter thread. It weighs 355g, measures 63 × 75mm, and includes a manual aperture ring with an “A” setting, enabling full program and shutter-priority modes on compatible bodies. There’s no internal focusing or quick-shift, and the front element rotates during focusing—making polarizer use a bit tricky. It was typically sold with a hard case (HB-120) and clip-on plastic cap.
==== Tech Specs ====
| Manufacturer    |Pentax|
| Series          |A Series Zoom|
| Model           |SMC|
| Focal Length    |28-80mm|
| Max Aperture    |f/3.5-4.5|
| Min Aperture    |f/22-32|
| Format          |Full-Frame|
| Image Circle    |-|
| Minimum Focus   |80cm|
| Focus Rotation  |°|
| Iris Blades     |5|
| Optical Design  |12/9|
| Squeeze         |none|
| Front Diameter  |63mm|
| Filter Thread   |58mm|
| Focus/Zoom Rod  |none|
| Native Mount    |Pentax K|
| Data Protocol   |none|
| Length          |75mm|
| Weight          |355g|
| Body Telescope  |-|
| Body Material   |-|
| Focus Drive     |-|
| Iris Drive      |-|
| Zoom Drive      |-|
==== History ====
Country of Origin:  \\
Release Date: 1986 \\
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: \\
</nodisp>
==== Notes ====
==== Media ====