The ornamental design for camera system, as shown and described.
FIG. 1 is a perspective view of a new and ornamental design for a camera system, with an electric cord shown in phantom for illustrative purposes only and forming no part of the claimed design;
FIG. 2 is a front plan view thereof, with an electric cord shown in phantom for illustrative purposes only and forming no part of the claimed design;
FIG. 3 is a rear plan view thereof, with an electric cord shown in phantom for illustrative purposes only and forming no part of the claimed design;
FIG. 4 is a side elevation view thereof, with an electric cord shown in phantom for illustrative purposes only and forming no part of the claimed design;
FIG. 5 is an opposite side elevation view thereof, with an electric cord shown in phantom for illustrative purposes only and forming no part of the claimed design;
FIG. 6 is a top plan view thereof, with an electric cord shown in phantom for illustrative purposes only and forming no part of the claimed design; and,
FIG. 7 is a bottom plan view thereof, with an electric cord, rectangular electrical contacts, and round foot pads shown in phantom for illustrative purposes only and forming no part of the claimed design.