What are the basics of photography?

There are three things you need to know to understand photography. Once you understand these three basic elements and how they relate to each other, you will be limited only by your own creativity and willingness to practice. These are:

• Aperture: If you look into a DSLR lens, you will see a set of blades through which a aperture is made in the center for light to pass through. That hole is a aperture and the lens can make the aperture smaller or larger by moving that blade. The bigger the aperture, the more light will go through, it is obvious. Aperture control of your camera is another way to change how much light the sensor receives. The size of the aperture controls how many images appear in focus behind and in front of what you are focusing on. This effect is Department-of-Field (DoF). When the background becomes too obscure as we move beyond the subject, we call it a "shallow" depth of field. If most of the picture appears to be in near-distant focus, we call it "deep" instead.

• Shutter Speed: The shutter is a door to illuminate the light-proof box in which the sensor resides. Shutter speed is the period when the shutter is open and, as you would expect, the longer it opens, the more light it can reach the sensor. Simply put, you can control the speed of your subject.

• ISO: If you've ever bought a film roll, you may remember that you had a variety of choices. In most stores, you can buy 100, 200 and 400 speed films, and in a good camera shop, you can buy much more. These figures are the ISO rating of the film, sometimes called Film-Speed ​​(or before 1990, it was called ASA). With film, the higher the number (e.g. 400, 800, 1600), the more sensitive the film will be to light, so it can be used in dark environments. The lower the number (e.g., 50, 100, 200), the less sensitive they are to light, making them more suitable for use in bright daylight. So why don't people just shoot ISO 1600 movies all the time? Unfortunately, the high-speed film was also more granular and had less color. This phenomenon is called "digital noise".

Exposure - Working together: To get a better grasp of how these three elements work together to create a photograph, a analogy can be useful. Think of it this way: Photography is like filling a bucket with water from a tube. If you fill the bucket but it does not overflow, we can say that we have the right exposure. n Photography, getting the right exposure means getting the right amount of light sensor for ISO setting, creating a picture that is not too bright or too dark.