Life is made up of moments which we call time. Our power is always in the present moment. Then, we exist and we are that power.
It can happen, frequently, that we want to keep that present moment because of the meaning it has for us, the beauty, the way we feel, etc. So we use photos with the illusion that we can keep it. Have you had that explosive reaction when you want to catch an image with a picture? Then, when you look at it you are disappointed because it does not reflect what you saw and felt in that moment. Of course not! The past or future can never replace the present moment. When we come to this conclusion, do we realise how much time we spend thinking of the past and the future and how little we spend in the present? Can we see how much energy and how many possibilities are lost by not being where our power is?