Okay, this one’s rather subjective, but the following are good starting points for your photo safari.
Links:
[1] http://www.moon.com/destinations/yellowstone-grand-teton/yellowstone-national-park/sights/grand-canyon-the-yellowstone
[2] http://www.moon.com/destinations/yellowstone-grand-teton/yellowstone-national-park/sights/old-faithful-and-upper-geyser-basin
[3] http://www.moon.com/destinations/yellowstone-grand-teton/yellowstone-national-park/sights/mammoth-hot-springs
[4] http://www.moon.com/destinations/yellowstone-grand-teton/grand-teton-national-park/sights/jackson-lake
[5] http://www.moon.com/destinations/yellowstone-grand-teton/grand-teton-national-park/sights/moran-junction-moose
[6] http://www.moon.com/destinations/yellowstone-grand-teton/grand-teton-national-park/sights/antelope-flats-loop
[7] http://www.moon.com/destinations/yellowstone-grand-teton/grand-teton-national-park/sights/jackson-lake-moran-junction
[8] http://www.moon.com/destinations/yellowstone-grand-teton/jackson-hole/jackson/sights