Photographic images by Diane Tuckman and Alan Kolnik will be on view through Sept. 23 at the Kentlands Mansion, 320 Kent Square Road, Gaithersburg. Although many of the images in Kolnik’s retrospective are presented as photographed, several use Photoshop and reveal the alternative potential of digital photography. Tuckman manipulates motifs in an ongoing series of photographs, reworking images with shifts, growth, mood, and light, as well as experiments with printing and painting on silk. She co-founded Silk Painters International, a worldwide organization for silk artists. Viewing is by appointment only. For more information, call 301-258-6425.