An eyewear device automatically provides an indication of photo capture by, substantially simultaneously with the capturing of a photo by a camera incorporated in the eyewear device, momentarily changing an optical characteristic of a pair of lenses forming part of the eyewear device. The photo capture indication can be by momentarily decreasing transparency of the pair of lenses such as more or less to mimic the visual effect observed in the viewfinder of an SLR camera during image capture.