Computers have had a big effect on the visual arts, especially photography: Digital cameras and digital printing are now the standards. And though the pieces in Quintin Gonzalez: digital images resembled digital photos, they were actually drawings created with a variety of software applications. One of the most striking features of the work was the iridescent palette of remarkable tones that Gonzalez squeezed out of a LightJet printer. Not only is Gonzalez one of the best high-tech artists in town, but he also inspires the creative use of technology as a teacher at the University of Colorado at Denver. The Sandy Carson show was a good introductory course.