| Subject | English | German |
| opt. | separation change between the lens components of a zoom objective | Änderung des Abstandes zwischen den Linsen eines Varioobjektivs |
| opt. | variable magnification zoom objective | Zoom-Objektiv |
| opt. | variable magnification zoom objective | Objektiv mit veränderlicher Vergrößerung |
| opt. | variable-power objective of the zoom type | Zoom-Objektiv |
| opt. | variable-power objective of the zoom type | Varioobjektiv |
| opt. | Vario-Glaukar zoom objective | Vario-Glaukar |
| opt. | zoom objective | Zoom-Objektiv (the separation changes between the lens components yield a focal plane which is stationary or does not move outside the limits of depth of focus) |
| opt. | zoom objective | Objektiv mit veränderlicher Brennweite (the separation changes between the lens components yield a focal plane which is stationary or does not move outside the limits of depth of focus) |
| opt. | zoom objective | Varioobjektiv (whose power changes smoothly and without interruption) |
| opt. | zoom objective | Objektiv veränderlicher Brennweite (the separation changes between the lens components yield a focal plane which is stationary or does not move outside the limits of depth of focus) |
| opt. | zoom objective | Gummilinse (the separation changes between the lens components yield a focal plane which is stationary or does not move outside the limits of depth of focus) |