The script comes from a different team, the costumes from another team, There is a huge lighting department and the sets are constantly being manipulated. What we see is the culmination of efforts of hundreds of people which is ultimately controlled by a director. It is the director who decides how a particular scene ought to be delivered. The voice modulation, the expressions, the proximity of actors - all these are being stage managed by the director.
The actors are only a medium to deliver the end product. So often we've seen the same actor pairs deliver brilliant scenes in one movie/show and fail in another. The fault almost always lies with the directors for failing to draw that right bit of emotion from the actor.
This is not to say that I'm negating the effort of actors. Almost all actors undergo a lot of physical and mental stress during the shoot. It is not easy to say "I love you" with that same intensity and the right expression 15-20 times at a stretch just to get the shot right. If anyone thinks that by the time that one shot is canned, the actors have any "love" left in them, they must be joking. But day after day, despite long hours, at times physical pain, ignoring their own families - they go on saying "Maa, main tumhare liye kuch bhi kar sakta hoon"
But to my mind there is another facet to this - when we rave about an onscreen pair we are actually in effect saying that they are bad actors. If what we call as "onscreen chemistry" is something that is to be expected from a given pair of actors, then that means either one or the other, if not both are bad actors and are unable to give us that same fire and sizzle when paired with another actor.
I know that quite a few of us are aware of all this. We see a TV show, as just that - a TV show. But there is a huge majority of people out there who rave about onscreen pairs, insist on seeing that "fairytale romance" over and over again, there is a fanaticism behind what should be appreciation. And frankly that scares me. It scares me because I see a young impressionable person dissociating himself/herself from reality and getting lost in a dream world.
I would love to hear what you think.