Abstract: A fixing device for fixing cameras and other optical devices to stands or for connecting them to other accessories, includes an adapter journal joined to the camera or other optical devices and a receiving device connected to the stand or other accessories and which is provided with an opening for receiving the adapter journal, and a rotatable locking device. The opening is configured as an insert opening on a part which can be displaced axially in an outward manner by means of housing part of the receiving device such that the adapter journal can be inserted radially into the insert opening.