How important is observation to photography?

Very, very important.

For example, when taking portraits, you need to capture your model's eyes, movements, expressions, etc., and also take into account his/her emotions. If you are taking pictures of sunshine and freshness, the mood must be relaxed, natural, comfortable and joyful. If it's an emotional film, the expression should look like you've eaten dog poop... (hahaha, just kidding).

Another example is taking pictures of scenery, which requires more observation. You need to find a scene, find a camera location, find your unique perspective, and determine the feasibility. For example, when shooting in winter, you should pay special attention to your feet and pay attention to your own safety.

Observation is actually very important not only for photography, but also for all walks of life.