What is megapixel?

What Does megapixel Mean

A megapixel , also known as a megapixel , is a unit equivalent to one million pixels (or pixels ). It is usually referred to in an abbreviated way as Mpx .

As you can see, to understand what a megapixel is, we must first understand the idea of ​​a pixel. This term comes from English and is formed as an acronym for pix (the colloquial plural of picture , which is translated as "image" ) and element (translatable as "element" ).
The smallest homogeneous surface between those that form an image is called a pixel . Pixels are defined according to their color and brightness .

When you gather one million pixels, you get one megapixel. It is interesting to mention that, while computer science usually uses a base of 1024 for the construction of prefixes, in this case a base of 1000 is used .
The notion of megapixel appears when referring to the image resolution offered by a digital camera . Based on the camera's ability to record photos at a certain resolution, it is said to be an X megapixel camera.
Take the case of a camera that can take images of 1600 x 1200 pixels : that is, 1,920,000 pixels . This device , therefore, has a resolution of 1.92 megapixels .
Simply put, the number of megapixels in a camera refers to the size of the images it can capture. This data is important when printing the photo, but it loses relevance when the document is kept in digital format and published on social networks , for example. It is common for the most popular platforms, such as Instagram and Facebook , to crop the images (and therefore the resolution).
It is important to make a clarification about the relationship between quality and the number of megapixels, since for many years the advertising campaigns of manufacturers of video or photography cameras, in addition to those of mobile phones, have tried to convince us that it was enough to take a look at this last value to estimate the quality of the image that we could obtain with the device. However, there are other factors to take into account to complete the equation.
As mentioned in a previous paragraph, the importance of megapixels comes out in particular when we want to print the photograph, because regardless of the quality of the image, at least a high value in this field ensures a large amount of detail. . The same happens with videos, which are nothing more than a long list of still images that are played in succession: whether it is a movie, a trailer or a video tutorial, the higher the number of pixels, the greater the clarity to time to reproduce it.

In order for the number of megapixels to really be used, it is very important that the camera's sensor be of advanced technology , since this component is what determines how much light the camera is capable of absorbing. In turn, another variable to take into account to know this in depth is the maximum aperture of the diaphragm, which is also known by the name of focal aperture and is found in technical documents represented with an f followed by a forward bar and a number, such as f / 1.5 .
It should be noted that this value, that of the focal aperture , should be understood as follows: the larger it is, the smaller the gap through which the light can pass, so that the preferred values ​​are the highest. Poor lighting is the worst enemy of cameras; To cope with it and get the most out of every pixel, your sensor needs to be optimal.

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