===== Pentax SMC 1000mm f/8 ===== 
{{ :lens:pentax_smc_1000mm_f8.png?400|}}
==== Summary ====
The SMC Pentax 1000mm f/8 is a legendary ultra-telephoto prime introduced in 1975 for the Pentax K-mount, and produced until 1986. It was the longest non-mirror telephoto lens Pentax ever made for 35mm format, designed for extreme-distance photography—from wildlife and surveillance to lunar and terrestrial imaging. With a focal length of 1000mm and a relatively fast f/8 aperture, it was a technical marvel of its time, though it demands serious planning and support to use effectively. Optically, it features a 5-element - 5-group design with Super Multi-Coating (SMC) and a 10-blade manual diaphragm, stopping down to f/45. The lens has a minimum focusing distance of 30 meters, offers a 0.036× magnification ratio, and uses rear-mounted 52mm drop-in filters. It lacks a traditional focusing ring—instead, dual side-mounted knobs control a rack-and-pinion focusing mechanism, much like a telescope. It includes front and rear sighting scopes to help locate distant subjects. The lens measures a massive 143 × 738mm, weighs 5.29kg, and was supplied in a dedicated aluminum trunk case with a built-in sliding hood and metal push-on cap.
==== Tech Specs ====
| Manufacturer    |Pentax|
| Series          |K Series Prime|
| Model           |SMC|
| Focal Length    |1000mm|
| Max Aperture    |f/8|
| Min Aperture    |f/45|
| Format          |Full-Frame|
| Image Circle    |-|
| Minimum Focus   |3000cm|
| Focus Rotation  |°|
| Iris Blades     |10|
| Optical Design  |5/5|
| Squeeze         |none|
| Front Diameter  |143mm|
| Filter Thread   |52mm (rear)|
| Focus/Zoom Rod  |none|
| Native Mount    |Pentax K|
| Data Protocol   |none|
| Length          |738mm|
| Weight          |5290g|
| Body Telescope  |-|
| Body Material   |-|
| Focus Drive     |-|
| Iris Drive      |-|
| Zoom Drive      |-|
==== History ====
Country of Origin:  \\
Release Date: 1975 \\
Launch Price:  \\
Design Revisions:  \\

==== Service ====
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Service Manual: (Insert link to manual here) \\
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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 ====