Answer:
1.- Because these reduce considerably the amount of light that reaches the sensor without altering the colors present in the scene. This type of filters is excellent for when, in conditions of good lighting, you want to make long exposures.2.- Because this way you can capture the surroundings around the waterfall, and appreciate the sky combining the falling water, as well as any other element not visible to the human eye.3.- They adapted mainly using the natural light of the moon, locating the best angles and hours to do it, and then they were adding a little artificial light.4.- Because sometimes natural light is not enough to capture the details of the waterfall with the lens, and the lantern gives light in the precise place where the photographer needs it.5.- Both have a very different attraction, day photography shows the beauty of the waterfall and its surroundings, night photography shows the tranquility of nature and forces us to imagine what there will be in the surroundings.
1.- Light is a very important element in photography, and at the same time it is very delicate, it is usually lost when we are in natural spaces, and this occurs at precise moments to photograph, in general, ignorance or lack of practice makes us lose that effect, but over time photographers learn to wait for the right light or manufacture it if it is a closed space.2.- Always, light is an essential element in photography, be it night or day, it plays a major factor in the quality of the image, its details and its colors.3. There are elements that benefit from light, others help light, but there are elements that do not allow light to do its work, like those that make a lot of shade, and there are other elements that are overloaded with light, For example, the glow of the moon in the sea, does not need extra light, because it would be overloaded.4.- The images with illumination, or light effects, grant to the one who sees them, a better optics, and sensation, than the dark images or without illumination.
5.- the most challenging aspect of working with light in photography, are outdoor shots, natural light, although it is very good, it can not be controlled, like artificial light, and this represents a great challenge in photography , therefore, the experience will help photographers to use that natural tool at their whim.
Explanation: