METHOD FOR OPERATING AN OPTICAL SYSTEM AND OPTICAL SYSTEM

The method involves detecting a user input for setting a focus setting and/or a zoom factor of a stereomicroscope (2) using an input device (21). Control signals, which are assigned to the detected input, are produced for setting the focus setting and/or the zoom factor in a control device (20). The signals are transferred to respective motor-driven adjusting devices (7 - 10, 13) for moving lens arrangements (3a, 3b, 4a, 4b) and a converging lens arrangement (11). The focus setting and/or the zoom factor are set based on the signals by moving the arrangements using the devices (7 - 10, 13). An independent claim is also included for an optical system with a microscope for representing an investigation object.