Table of Contents
Pentax-A* SMC 85mm f/1.4
Summary
The SMC Pentax A* 85mm f/1.4 is a legendary manual-focus short telephoto prime introduced in 1984 for the Pentax KA mount, produced until 1989 as part of the elite “Star” series denoted by a green star. Designed for full-frame 35mm film, it features a 29° diagonal field of view, making it ideal for portraiture, low-light shooting, and artistic rendering. Optically, it employs a 7-element, 6-group design with Super Multi-Coating (SMC) and a 9-blade automatic diaphragm, stopping down to f/22. It focuses as close as 85cm, achieving a 0.11× magnification ratio, and supports 67mm filters. The lens measures 74 × 66mm, weighs 555g, and includes an aperture ring with an “A” setting, enabling full exposure automation on compatible bodies. It lacks internal focusing but pairs with accessories like the MH-RA hood and HG-115E hard case.
Tech Specs
| Manufacturer | Pentax |
| Series | A* Series Prime |
| Model | SMC |
| Focal Length | 85mm |
| Max Aperture | f/1.4 |
| Min Aperture | f/22 |
| Format | Full-Frame |
| Image Circle | - |
| Minimum Focus | 85cm |
| Focus Rotation | ° |
| Iris Blades | 9 |
| Optical Design | 7/6 |
| Squeeze | none |
| Front Diameter | 74mm |
| Filter Thread | 67mm |
| Focus/Zoom Rod | none |
| Native Mount | Pentax K |
| Data Protocol | none |
| Length | 66mm |
| Weight | 555g |
| Body Telescope | - |
| Body Material | - |
| Focus Drive | - |
| Iris Drive | - |
| Zoom Drive | - |
History
Country of Origin:
Release Date: 1984
Launch Price:
Design Revisions: