The most wonderful thing about 'people photography' with a digital is that you can see what the picture of that person is like on the LCD even before you take it! You can position the light in the way you want it, take the picture and if it still isn't right you can take another one until you are satisfied with the lighting. You can even do a few in black and white, a few in sepia and a few in colours, change the ISO as you go and generally have a fabulous time. Or you can just delete it there and then. You can try all this, plus shoot them at different angles, and everything between. And if you have colour filters.....well, you are only limited by your imagination.