>>2904446Yes, they're in the top 3 key things to photography that is worth looking it.
Lighting is used to make images and backgrounds 3-dimensional and exciting.
This is the best instant example to me (pic related, left = natural light garbage, right = with off-camera light enhancement)
http://strobist.blogspot.com/2006/03/lighting-101-balancing-flash-and.htmlIf you want to start from the beginning
http://strobist.blogspot.com/2006/03/lighting-101.html