The three variables that matter the most in photography are simple: light, subject, and composition.
1. Light
Without light you couldn’t take pictures in the first place, let alone good ones. The quality of light depends upon the conditions that you encounter, and it isn’t always something you have the power to change. Light is important element of your camera while you are taking photos, because it gives character for your picture. The feel of your photograph will be vastly different depending upon the lighting conditions: harsh light, gentle light, warm light, cool light, and anything in between.
2. Subject
A Subject is what you call something that caught your eyes to take pictures. when you’re choosing the right subject for a photograph, you need to be thinking ahead. How would the ideal photo of this subject look, and how can you get to that point? Visualize the final result, and do everything you can to make it a reality. a good subject can captivate your viewers, and the other parts of an image – including crucial elements, even light – are allowed to fade into the background.
3. Composition
Finally, the third crucial element of every photograph is your composition. Composition is the stage where you ask yourself “how.” How can you take photo of the beauty, excitement, darkness, intensity, softness, or any other emotion of a scene as perfectly as possible? A good composition emphasizes the parts of a photo that are the most important.
Good photos affect us because they impact our emotions and resonate with us at a deeper level. You can only truly learn buy going out and taking pictures, then examine your work and see how you can improve it.
Art of Photography 