The ornamental design for an adapter for cameraaccessories, as shown and described.
FIG. 1 is a front perspective view of an adapter for camera accessories showing my new design;
FIG. 2 is a front view thereof;
FIG. 3 is a bottom plan view thereof;
FIG. 4 is a right side view thereof, the left side view being a mirror image of FIG. 4; and,
FIG. 5 is an enlarged view showing the portion defined by lines 5-5 in FIG. 4.
The features shown in broken lines in the drawings depict environmental subject matter only and form no part of the claimed design. The dash-dotted lines denote the boundary of the claim and form no part of the claimed design.