Characteristics and components of Reflex cameras

Nowadays, thanks to mobile telephony, many people have become interested in photography. This fact has generated an increase in sales of reflex cameras.

In this article we will see the features and the most prominent components of the reflective cameras, whose main features are the optical viewfinder, although this subject is shown below this type of cameras have other characteristics that differentiates them from other models.

The cameras are used for professionals and amateurs, and the quality of the images are superior to compact cameras or mobile phones. In addition, these cameras have a greater number of manual adjustments.

cámaras reflex características

The components of reflex cameras


The sensor may be the most important element not only of the reflex cameras, but also the rest of the cameras. On the pixels (photosensitive cells) of the sensor the light coming from the lens is projected and this processes the final image.

The sensors can be of different types depending on the size. On the one hand we have the Full Frame sensors, with a measurement of 24 x 36 and which are the most expensive. The APS-H, which are exclusive to Canon with a measurement of 19.1 x 28.7. Finally we have the APS-C that have a size of 15.5 x 23.6 and are the cheapest of all.


The shutter is a sheet that when pressing the trigger allows light to pass from the lens to the sensor. The time the shutter is open depends on the exposure speed at which we take the photo.

Long exposure photographs are achieved by keeping the shutter open for several seconds or even minutes.


The viewfinder, as we have said before, is the most characteristic of the reflex camera. Through it you can observe what we are going to photograph.

The screen

Through it we can control the different options of the camera, such as the ISO, the aperture of the diaphragm or the shutter speed among others. We can also see the photographs taken and in most cameras we can also see the photograph before taking it, it is what is known as “Live view”, although it will not have the same precision as the viewfinder.

The slot for cards

In them the memory cards where the photos are saved are introduced. It depends on the camera can have one or two slots.


It is what gives the energy to the camera, without it it can not work.

The connections

On one side usually have different types of connections, depending on the camera can have HDMI connection, microphone, etc.

Some cameras also have wireless connections such as bluetooth, wifi, etc.


It is not that they all have it but the great majority if they usually take it incorporated.


Another very important component since it measures the light of the scene. It has different configurations.

Manual mode of reflex cameras

One of the reasons why we buy a reflex is because of the possibility of shooting in manual or semiautomatic mode.

With the manual mode we can control the shutter speed, the aperture of the diaphragm, the ISO, the white balance, etc.

These cameras also have automatic modes, but normally you always shoot in manual mode, since the camera is not always able to process the information that comes from outside.

Advantages and disadvantages of reflex cameras

The disadvantages of these cameras are their size, weight, price and also, depending on what we want to photograph, we must change the objective, which means carrying more than one in the backpack.

The positive part is the quality of the image, much higher in some cases to compact cameras or mobile phones, although increasingly these devices are capable of taking pictures of a very good quality, but for now without reaching the professional quality that can give you a reflex camera.

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