The subject matter of the present disclosure generally relates to objective lens changers for optical instruments. In one embodiment, an objective lens changer includes an objective lens carrier moveably attached to a changer frame by a mechanical link arrangement. The objective lens carrier includes two or more objective lens positions. The mechanical link arrangement includes a first link section to provide translation of the objective lens carrier between the objective lens positions and a second link section arranged to control an alignment of the objective lens position with respect to the optical axis of the optical instrument.