Focus is a word used in the Spanish language to refer to the action and consequence of focusing. This verb, in turn, has four definitions according to the information provided by the Royal Spanish Academy (RAE): get the image of an object that is produced in the focus of a lens is captured clearly on a specific plane or object; get in the viewfinder of a photographic camera that the image to be captured is in the center of the plane; carry out the projection of a beam of light or a specific number of particles on a point in particular; and drive the attention towards an issue, question or problem from assumptions developed in advance in order to solve it correctly.

Attention

The concept of focus can be linked to concentration or a particular gaze.

Interactional approach

The concept of focus gives rise, as can be seen, to multiple notions. To cite one case, there is a interactional approach which is defined as a theory from systems which is framed within the scope of communication Sciences. This approach studies the pragmatic consequences who has interpersonal communication, conceiving communication as an open structure of interactions that occur in a particular context.

The interactional approach is based on three postulates: the principle of totality (which indicates that any alteration in one part of the system influences the rest of the parts, transforming the whole), the principle of circular causality (referring to complex links of mutual implications, actions and feedback contemplated in a communication cycle) and the regulation principle (The one that establishes that all communicative act must adapt and respond to certain norms, rules and conveniences).

A comprehensive understanding

On the other hand, the so-called integral approach It is part of a theory that tries to achieve the widest possible understanding of both the human being and the universe, by combining the science and of the spiritual root intuition. The integral approach seeks that this understanding provoke a global revolution that encompasses the organism, the mind and the spirit.

At learning, the comprehensive approach refers to educational methods that seek to create better opportunities and allow all learners to receive an education appropriate to their lifestyle, offering them a range of options in terms of information, job opportunities and mobility Social. Examples of education with a comprehensive approach are the distance learning, where students adhere to a highly flexible educational system in schedules and educational planning, with a type of teaching vertical and unidirectional (In other words, each student has the possibility to interact directly with their teacher and work on those points that are not going quite well in their learning. These sporadic encounters between student and teacher are called tutorials).

Photography

The idea of ​​focus is used frequently in the field of photography.

Manual focus and autofocus

On Photography There are two types of focus: manual and automatic.

The modern ones digital cameras possess approaches automatic of various types, such as: the classic one that allows you to simply focus and capture the image, the continuous one that allows you to track the object you want to capture while it is in motion, and the smart one that integrates the classic (also called simple) and the continuous agreement and allows to use one or the other interchangeably. It is true that much progress has been made in this type of technology, however, the automatic mode is not useful in all cases. Manual focus is sometimes necessary in order to properly take a picture. composition particular.

When we want to capture an image where a tiny one stands out detail; in this way, we can achieve a much more precise capture, allowing certain elements of the scene to stand out. It can also be extremely useful for urban spaces, in the case of wanting to capture a fixed point and that the rest of the life of the city is not taken in the image. On the other hand, it can be extremely useful to take a picture of an object that is hidden after another, with the autofocus it is usually difficult to focus correctly on the desired object, instead the manual will allow us to take a precise snapshot. Finally, it can also be extremely useful for photographs of architecture and in compositions where there is a high contrast, where the autofocus is often confused and have serious problems to focus well.

Learning to use manual focus is not an easy task, but acquiring this skill requires a lot of practice. For moving photos, photographers recommend using a technique called pre-focus, which implies placing the focus on a fixed point (through which we are convinced that the subject will pass) and when we think it is time, taking the photograph.