If you are shooting sunset at Olmsted Point , turn around. You’ll be greeted by a fantastic view of Mount Conness (not actually in YNP), and Tenaya Lake. Here is an image (in both B&W and color) of Mount Conness & Tenaya Lake in evening light:
Mount Conness & Tenaya Lake in evening light, August 2009
Mount Conness & Tenaya Lake in evening light, August 2009