The promising work of this conceptual artist from Los Angeles falls somewhere between drawing and photography—and between being and nothingness. First, she sketches loose grids on large sheets of paper or spray-paints paper with rows of soft-focus black dots, which she cuts into silhouettes of people huddled in groups. Then, she photographs the tableaux—scenes of flatness that sneak a curious volume into the pictures. Everything in Osterloh’s world seems to be on the verge of dissolving—even the artist herself, in a video in which she tries to merge with her own shadow. Through Dec. 19.