The ornamental design for a photobooth, as shown and described.
FIG. 1 is a front perspective view of a photo booth showing our 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;
FIG. 7 is a rear perspective view thereof; and,
FIG. 8 is a bottom view thereof.
The broken lines depict portions of the photo booth in which the design is embodied that form no part of the claimed design. Additionally, the separations on the vertical pole depicted by the broken lines indicate break lines for indeterminate length. Any portion of the article between the break lines form no part of the claimed design.