nature: if during a cloudy day the sun comes out at a certain moment this will modify the condition of the light. In an interior space if someone enters a dark room and turns on the light this will change the condition of the light. However, this is all tied to precise actions. This discourse is amplified in Tota Maina, where in addition to variations in natural light were added variations which correspond to emotional motivation rather than any sense of logic.
During some scenes you also used different shutter speeds, sometimes barely noticeable.
During the filming Shyam Babu would ask for certain precise frames a slight increase in shutter speed, hardly noticeable, and therefore far from the slow motion effect we have been accustomed to seeing in many TV Series. This was solely to have greater suspension, therefore always in the service of a