KMAC Museum is ambitiously putting on a mass showing of four contemporary artists at one time. James Benjamin Franklin’s “A Layered Approach” illustrates his use of multimedia objects to create sculptural paintings that border on crafts. “Before It Falls Apart” by Kiah Celeste and “Spectrum” by Myra Greene are part of the Louisville Photo Biennial. Cynthia Norton’s “Mystical Heart” focuses on narrative paintings; her drawings are on display across the street at Moremen Gallery through Oct. 24.