The ornamental design for a cameramountingsystem, as shown and described.
FIG. 1 is a front perspective view of a camera mounting system showing my new design;
FIG. 2 is a front elevational view of FIG. 1;
FIG. 3 is a rear elevational view of FIG. 1;
FIG. 4 is a right side view of FIG. 1;
FIG. 5 is a left side view of FIG. 1;
FIG. 6 is a top plan view of FIG. 1;
FIG. 7 is a bottom plan view of FIG. 1; and,
FIG. 8 is a bottom perspective view of FIG. 1.
The broken lines immediately adjacent the shaded areas, if any, represent the bounds of the claimed design while all other broken lines are directed to environment; the broken lines form no part of the claimed design.