When it comes to the art of lightning you can easily say that there are three reasons: for the camera to get enough light to expose, to get the correct contrast in the image and to create a mood.
The art of putting light on film requires incredible exercise and takes a very long time to learn. There is no right or wrong when it comes to lightning.
You rather solve the problem by using every light source you have and think logically.
Where does the light come from? and where can I put the lights to look like the natural light?
A light that falls through a window allows you to turn to its advantage by using it as the main key light.
To lighten shadows and contrasts in the image, you can put a light on the opposite side. This is much easier than lighting the room from “scratch”.
All lighting is based on basic lighting.
It does not matter if you have four lamps or one hundred lamps.
All are set according to the same principle. The lights are almost never placed from the front because the image gets incredibly flat and boring.
Instead, place the lights off the sides to get a little contrast in the image.
When setting candles, you always start with a key light, which is also the most important and brightest light.
The headlight is placed about 45 degrees from the camera – but not behind. The main light should be positioned to resemble a natural light source, such as a sun or ceiling lamp.
Next, you put a fill light from the other side that lightens the contrasts that the main light gives.
The lightning light is therefore slightly weaker and softer than the main light, and this can be achieved by placing the lamp further from the subject, alternatively by placing filters and diffusers on it.