An endoscope including an endoscope shaft closed by a cover glass an optical system arranged in the endoscope shaft, the optical system including at least one prism located proximally to the cover glass a prism holder for holding the optical system and mounted so as to be pivotable about a rotation axis perpendicular to a longitudinal axis of the endoscope shaft, wherein the prism holder has at least a portion having a circular circumference with a toothed arrangement an elongated adjustment element movable along the longitudinal axis of the endoscope shaft and having a mating toothed arrangement for engagement with the toothed arrangement of the prism holder, the mating toothed arrangement being formed at least on a distal portion wherein at least the distal portion of the adjustment element is bendable such that it is guided in a curved guide channel formed at least partially around the prism holder.
