The Olympus AF 35-70mm f/3.5-4.5 is a zoom lens from the Olympus brand. It was probably produced in a factory in Olympus’ home country, Japan.
This specimen comes with a zoom function. The zoom factor is 2, and the range is from 35mm to 70mm. This will cover most situations in everyday life. The aperture at one end is f/3.5. At the telephoto end it is f/4.5. The closest focusing distance is given as 30 cm.
You can theoretically use the lens with cameras with Olympus OM mount. However, it is an electronically controlled autofocus lens. Aperture and focus are set by the camera electronics and cannot be changed manually on the lens itself. Therefore, you can only use it with two models in the series, the OM-707 (OM-77 AF) and OM-101 PF (OM-88). It does not make sense to use it on other models of the OM series or modern digital cameras.
The nine lens elements of the Olympus AF 35-70mm f/3.5-4.5 are arranged in eight groups. A 49mm filter lens, such as an Orange filter, can be attached in front of the lens. The weight is listed at 250 grams and the length is 5.3 cm.
Technical datasheet
| Attribute | Specification |
|---|---|
| Minimal focal length | 35 mm |
| Maximum focal length | 70 mm |
| Zoom factor | 2 |
| Biggest aperture (wide angle) | f/3.5 |
| Biggest aperture (tele) | f/4.5 |
| Smallest aperture | f/32 |
| Minimum focus distance | 30 cm |
| Number of elements | 9 |
| Number of groups | 8 |
| Filter thread | 49 mm |
| Weight | 250 g |