There is such a thing in the art of photography as the depth of sharpness, you can often hear from photographers the abbreviation flu, which means literally the depth of the sharply depicted space. Often, people who begin to photograph book definitions are scared and dismissed from incomprehensible instructions and completely unjustified. Do not forget that everything new seems difficult and impossible, but you should carefully read, try and your fear will soon disappear, rewarding you with a lot of beautiful photos.
How the depth of sharpness affects the photograph
What does this mean, a wise at first glance, the concept? The depth of sharpness is a certain distance between some two objects, which is transmitted in the picture sharply. In simple words, the picture contains a portrait or some other main standing object, if you cannot clearly see the background, then the depth of sharpness is small. If, on the contrary, all the details in the photograph are clear and clearly visible, how often you can observe the pictures of landscapes or interior, then the depth of sharpness is big. Also, having decided on your goal and idea, you can achieve not quite small and not quite a large depth of sharpness, but average. This, I repeat once again, depends directly on what effect and plot you intend to implement in your picture.
How the depth of sharpness affects the photograph
The small depth of sharpness will allow you to highlight the most important objects in the photo. Often this is used in the shooting of portraits, some objects, as well as in macro-filming, where you need to pay and keep the viewer’s attention. Everything else does not matter and is blurry.
How the depth of sharpness affects the photograph
The big depth of sharpness makes it possible to photograph objects sharply. This technique is often found when shooting landscapes, dynamic portraits, as well as in city plots, reports and architecture.
The depth of sharpness can depend on the three most basic parameters:
Diaphragm
The main parameter with which we can regulate the depth of sharpness is of course a diaphragm. To reduce the flu, we need to open the diaphragm as wider as possible, that is, reduce the number of diaphragm. To increase the flu, we need to close the aperture more, that is, increase the number of diaphragm. On different lenses, the minimum and maximum numbers may vary slightly, for example, values can begin with 1.4 or 2.8, and end 16 or 22. It is extremely not recommended to close the diaphragm completely to a value of 22, because there can be diffraction and too soft image.
Focal length
Using a focal length, you can also affect our important parameter in the shooting depth of sharpness. Here it is necessary to remember such a moment that the flu will be less as much as the distance will be less to the lens. And quite the opposite, there will be more flu, as much as the object will be before your lens. Everything is extremely simple, you only need to understand how this principle works. You can combine the desired diaphragm using the desired focal length, thus obtaining the depth of sharpness you need.
Distance to removed object
Everything is also incredibly simple here. In order to maximize the depth of sharpness, you just need to get closer to the object that you shoot. The reverse situation, for the maximum increase in the flu, you need to move away simply further from the object you remove. A good training will be the use of all these three parameters separately and in combination, which will give you a deeper understanding of the concept of depth of sharpness, as well as the instrumental of these techniques necessary for the photographer.