The ornamental design for an instantcamera, as shown and described.
FIG. 1 is a perspective view of an instant camera, showing the new design;
FIG. 2 is a front view thereof;
FIG. 3 is a rear view thereof;
FIG. 4 is a right side view thereof;
FIG. 5 is a left side view thereof;
FIG. 6 is a top view thereof; and,
FIG. 7 is a bottom view thereof.
The evenly dashed broken lines shown in the drawings illustrate portions of the instant camera that form no part of the claimed design. The dot-and-dash broken lines define the bounds of the claimed design and form no part thereof.