Table of Contents
Pentax SMC 200mm f/2.5
Summary
The SMC Pentax 200mm f/2.5 is a fast, manual-focus telephoto prime introduced in 1977 and produced until 1986, designed for full-frame K-mount film and digital SLRs. It was the fastest 200mm lens Pentax ever made, offering a unique blend of speed, build quality, and optical character that still draws attention from collectors and vintage lens enthusiasts. It features a 6-element/6-group optical design, an 8-blade automatic diaphragm, and Super Multi-Coating (SMC) for improved contrast and flare resistance. With a fixed f/2.5 aperture, it delivers a 12° diagonal field of view on full-frame (or ~8° on APS-C), focuses down to 2 meters, and offers 0.13× magnification. The lens uses a 77mm filter thread, weighs 950g, and measures 89 × 145mm. It includes a built-in sliding hood, clip-on front cap, and was originally sold with a dedicated hard case.
Tech Specs
| Manufacturer | Pentax |
| Series | K Series Prime |
| Model | SMC |
| Focal Length | 200mm |
| Max Aperture | f/2.5 |
| Min Aperture | f/32 |
| Format | Full-Frame |
| Image Circle | - |
| Minimum Focus | 200cm |
| Focus Rotation | ° |
| Iris Blades | 8 |
| Optical Design | 6/6 |
| Squeeze | none |
| Front Diameter | 89mm |
| Filter Thread | 77mm |
| Focus/Zoom Rod | none |
| Native Mount | Pentax K |
| Data Protocol | none |
| Length | 145mm |
| Weight | 950g |
| Body Telescope | - |
| Body Material | - |
| Focus Drive | - |
| Iris Drive | - |
| Zoom Drive | - |
History
Country of Origin:
Release Date: 1977
Launch Price:
Design Revisions: