The foyer, or formal entrance to the home, is one of the most important areas of the house. This space should really set the tone and style of the formal or main rooms of the house. The foyer should be the space that say’s “LOOK AT ME!!!!”.
Just like all rooms there are no specific shapes or size to any foyer. They may be one, two or 3 stories, flat ceiling or vaulted ceilings. So unfortunately there is no standard way to light the space.
If you have a single story foyer, I like to use a decorative ceiling fixture along with some recessed lights for accent lighting or possibly add some wall sconces as well. The sconces will really add character especially if you have a LOW ceiling.