The Olympus Zuiko Auto-Zoom 28-85mm f/3.5-4.5 is a lens of the famous Japanese company Olympus. It was also built in Japan and sold to photographers for their 35mm SLR cameras. Today it can also used with an adapter on a digital camera.
The Olympus Zuiko Auto-Zoom 28-85mm f/3.5-4.5 is a zoom lens. It has a zoom factor of around 3. The range is 28 mm to 85 mm. 28 mm is quite uncommon for zoom lenses for the Olympus OM system. The maximum aperture opening is f/3.5 respectively f/4.5 on the tele end. With the zoom range the lens can be used for a wide range of applications.
The focus adjustment on this model is set manually. The closest focusing distance should not be less than 60 cm. The lens design is made up of 14 elements in 11 groups. A filter can be screwed onto the 55 mm filter thread. The manual says the weight is 480 grams.
Technical datasheet
| Attribute | Specification |
|---|---|
| Minimal focal length | 28 mm |
| Maximum focal length | 85 mm |
| Zoom factor | 3.0357142857143 |
| Biggest aperture (wide angle) | f/3.5 |
| Biggest aperture (tele) | f/4.5 |
| Smallest aperture | f/22 |
| Minimum focus distance | 60 cm |
| Number of elements | 14 |
| Number of groups | 11 |
| Filter thread | 55 mm |
| Weight | 480 g |
| Country of production | Japan |