Photography, my hobby

Hi! Today I'm going to speak about one of my hobbies: Photography.

Photography is a science, art and practice of creating durable images.Durable images are created by recording light. If we haven't got light we can't make photos. The light is the base of photography. We can control how much light enter into the len, for that we use the diaphragm. Diaphragm is a thin opaque structure with an opening at its center; the role of the diaphragm is to stop the passage of light, except for the light passing through the aperture. When we open more the diaphragm, the aperture is bigger and enter more light, so the image is going to be more enlightened. And when we close more the diaphragm, the aperture is smaller and enter less light, so the image is going to be darker.

Other factor that controls the light is the flash, we use it when the scene is dark and we need light to iluminate it. Other thing which we have to know about the diaphragm is the shutter speed. It is the length of time a camera's shutter is open when taking a photograph. For example, in a short time, the shutter keeps open very little time letting less light to the photocell. With them, it's achieved freeze or reduce significally the movement. In a longer time, the shutters keeps open.

It is a great hobbie and I recommend you!