An objective for a camera defines an axis and includes an inner objective element and an outer objective element at least partially surrounding the inner objective element. The inner objective element and the outer objective element conjointly define an interface and are mounted so as to be rotatable relative to each other about the axis. A sealing system is disposed at the interface between the inner objective element and the outer objective element and the sealing system includes a plastic foil in contact engagement with the inner objective element and the outer objective element.