lens:pensmc28-50mmf3.5-4.5
Table of Contents
Pentax SMC 28-50mm f/3.5-4.5
Summary
This is the only non-mirror zoom lens of the K series to have varying aperture.
Tech Specs
| Manufacturer | Pentax |
| Series | K Series Zoom |
| Model | SMC |
| Focal Length | 28-50mm |
| Max Aperture | f/3.5-4.5 |
| Min Aperture | f/22-32 |
| Format | Full-Frame |
| Image Circle | - |
| Minimum Focus | 55cm |
| Focus Rotation | ° |
| Iris Blades | 6 |
| Optical Design | 10/10 |
| Squeeze | none |
| Front Diameter | 65mm |
| Filter Thread | 52mm |
| Focus/Zoom Rod | none |
| Native Mount | Pentax K |
| Data Protocol | none |
| Length | 52mm |
| Weight | 315g |
| Body Telescope | - |
| Body Material | - |
| Focus Drive | - |
| Iris Drive | - |
| Zoom Drive | - |
History
Country of Origin:
Release Date: 1975
Launch Price:
Design Revisions:
Service
Cine-Mod
Notes
Media
lens/pensmc28-50mmf3.5-4.5.txt · Last modified: 2026/07/09 05:31UTC by Justin Rhoads