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lens:pensmcrelfex2000mmf13.5
Table of Contents
Pentax SMC Reflex 2000mm f/13.5
Summary
The SMC Pentax Reflex 2000mm f/13.5 is one of the most extraordinary lenses ever produced—not just by Pentax, but by any manufacturer. Released between 1979 and 1982, it holds the distinction of being Pentax’s longest focal length lens ever made, and one of the rarest and most extreme telephoto lenses in 35mm photography.
Tech Specs
| Manufacturer | Pentax |
| Series | K Series Reflex |
| Model | SMC |
| Focal Length | 2000mm |
| Max Aperture | f/13.5 |
| Min Aperture | f/13.5 |
| Format | Full-Frame |
| Image Circle | - |
| Minimum Focus | 2000cm |
| Focus Rotation | ° |
| Iris Blades | none |
| Optical Design | 6/4 |
| Squeeze | none |
| Front Diameter | 180mm |
| Filter Thread | 52mm (rear) |
| Focus/Zoom Rod | none |
| Native Mount | Pentax K |
| Data Protocol | none |
| Length | 520mm |
| Weight | 8000g |
| Body Telescope | - |
| Body Material | - |
| Focus Drive | - |
| Iris Drive | - |
| Zoom Drive | - |
History
Country of Origin:
Release Date: 1979
Launch Price:
Design Revisions:
Service
Cine-Mod
Notes
Media
lens/pensmcrelfex2000mmf13.5.txt · Last modified: 2026/07/09 10:25UTC by Justin Rhoads