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Susan Eder and Craig Dennis have produced a number of impressive conceptual artworks, primarily using photography. They have photographed popcorn, bread, and cut bananas in a search for accidental, human-like features, and they have taken images of clouds that looked like numbers or letters and stitched them together in interesting ways. Methodologically, their new project sounds promising—-the collaborators wrote two opposite words in colored ink, then folded the paper together to create an inkblot. But while the colors are pleasant enough—-magenta, gold, cream, rust—-the final scanned and enlarged Rorschach tests fail to reach the high bar of intellectual stimulation displayed in their previous work. Also on view at the gallery: New, rolled paper sculptural works by Jae Ko—-including pieces that alternately suggest vertebrae and a time-lapse photograph of a wobbling plate—-coinciding with a fuller exhibition of Ko’s work at the Phillips Collection nearby.

Through Dec. 8 (Eder/Dennis) and Nov. 27 (Ko) at Marsha Mateyka Gallery, 2012 R Street NW, Washington, D.C. (202) 328-0088. Wed-Sat 11:00 to 5:00 pm or by appointment.