The ornamental design for a camera, as shown and described.
FIG. 1 is a top, front and right side perspective view of a camera showing my new design;
FIG. 2 is a top, rear and left side perspective view thereof;
FIG. 3 is a front elevational view thereof;
FIG. 4 is a rear elevational view thereof;
FIG. 5 is a top plan view thereof;
FIG. 6 is a bottom plan view thereof;
FIG. 7 is a left side elevational view thereof; and,
FIG. 8 is a cross-sectional view thereof taken along lines VIII-VIII of FIG. 3, in which an internal structure thereof is not shown.
The broken lines depict portions of the camera in which the design is embodied that form no part of the claimed design. Additionally, the dash-dot lines denote the boundary of the claim and form no part of the claimed design.