Lantern, Bullseye: A bullseye lantern provides normal light in a 60-foot cone and increases the light level by one step in the area beyond that, out to a 120-foot cone (darkness becomes dim light and dim light becomes normal light). A bullseye lantern does not increase the light level in normal light or bright light. A lantern burns for 6 hours on one pint of oil. You can carry a lantern in one hand.