A holding apparatus for fastening camera accessory parts to a camera system can be fastened to support tubes of the camera system. The holding apparatus comprises a bridge part which has two pairs of openings for receiving support tubes, with the openings of the one pair differing from the openings of the other pair at least with respect to their spacing; at least one pair of clamping elements which are provided at the bridge part and are movable at least between a clamping position and a release position, with the clamping elements locking support tubes received in the openings at the bridge part in the clamping position of said clamping elements; and an actuation device which is configured to move the clamping elements together. The clamping elements have different clamping sections which are configured to lock support tubes of different diameter and/or different spacing at the bridge part.