The quantity of light that hits the light-sensitive surface of the camera is what is supposed to be called to as the “light exposure.” Your subject is always illuminated by a certain quantity of light in every single environment, regardless of whether the light coming from the scene is natural or artificial. This amount of light may be characterized. This quantity of light varies depending on four essential parts: the intensity, the duration, the distance between the light source and the subject, and the modifications to the light. The behavior of light is interesting because it has characteristics of both waves of energy and particles at the same time. The dual nature of light as a wave and a particle influences how it behaves both on the inside and the exterior of a camera and lens. Let’s take a look at the light’s intensity, duration, distance, and how it changes as it travels:
Light is the most important element to capture while taking photographs. It is important to keep in mind that the original meaning of the term “photograph” was “light drawing,” as we have discussed before. In order to create an image that we are able to see, we need to have full control over the quantity of light that is used as well as the sensitivity of the light. To begin, it is important that we have a solid understanding of what is called to as the “Characteristics of Light.” Then, we should learn how a camera and lens work together to manage exposure by using what is generally referred to as the “Exposure Triangle.”
The quantity of light that hits the light-sensitive surface of the camera is what is supposed to be called to as the “light exposure.” Your subject is always illuminated by a certain quantity of light in every single environment, regardless of whether the light coming from the scene is natural or artificial. This amount of light may be characterized. This quantity of light varies depending on four essential parts: the intensity, the duration, the distance between the light source and the subject, and the modifications to the light. The behavior of light is interesting because it has characteristics of both waves of energy and particles at the same time. The dual nature of light as a wave and a particle influences how it behaves both on the inside and the exterior of a camera and lens. Let’s take a look at the light’s intensity, duration, distance, and how it changes as it travels:
Intensity, or the degree to which the light is shone: Photons are particles of light that may be produced by a source of light; the more photons that are generated by a light source or reflected by an object. The number of photons that reach a sensor or piece of film influences the brightness of an image. The darker picture received less photon exposure than the brighter image.
Duration
The sun is a continuous light source and we often use sun light as natural light. But if the duration of sunlight is long, it may cause to have over exposed image. Artificial light duration is more able to be controlled. They can be turned on or off and some is emitted in a short-duration flash. If you keep longer the amount of time of light coming from a light source, photons number that are collected by the camera will increase. And the opposite; if the light duration is shorter time than it necessary, your image will be darker than it supposed to be.
Distance
When you get closer to a light source, the number of photons that a camera is able to record increases. The longer the distance, the less photons you are able to collect. What happens if the distance from the light source is doubled? There should not be half as many photons and half as much light? Due to a phenomenon known as the Inverse Square Law, doubling the distance results in just a quarter as much light. This is due to the fact that we are discussing area rather than just distance. If the light source is not a laser, then the light will spread out in all directions as it is emitted from the most of the sources.
Modifications
When it comes to managing and sculpting light, whether it be natural or artificial, there is a limitless number of light modifiers possible. You are unable to make the sun less bright, but the clouds surely can. You may also shift your subject into the shadow or generate shade. To change light, you have a wide variety of equipment at your disposal, some of which are reflectors, diffusers, and gels.