Johanna Jaeger’s pictorial practice unfolds along a variety of trajectories that are always in close touch with a core characteristic of photography: its relation to time. The new works she presented in her recent exhibition “checkerboard sky” translate this program into pictures that fuse complexity with Minimalist precision. Jaeger has devised an open and experimental yet distinctive visual idiom; her motifs are often liquid—drops of colored ink in water—and ephemeral phenomena, such as the process of a form’s gradual dissolution. Jaeger draws attention to modes of transition that

Air is the stuff breath is made of. It is also a prime element in the delightful sculptures and wall works of Franco Mazzucchelli, whose first solo exhibition in Germany, “Pneuma,” offers a snapshot of the Italian artist’s long career devoted to perceptively questioning our physical and financial interactions with sculpture and with the very nature of the art object.

Born in Milan in 1939, Mazzucchelli has been working with plastics, such as polyurethane, polyester resin, and inflatable PVC, since 1964, when he started to make sculptures using these synthetic materials. In the series “A. to A.,”