Mobile photography is booming, and most high-end smartphones have a quality very close to that of cheaper DSLR (or SLR) cameras. If a few years ago the battle in this area came from the megapixels, nowadays it is debated by the focal aperture. This time we will explain its meaning and how it influences when capturing an image with our smartphones.
In the case that you want to know the focal aperture of the camera of your mobile device, you can access the manufacturer’s website or use applications like Google Photos. Simply take the picture in question and click on the Information button to see what the value of our camera’s sensor is.
What is the focal aperture in smartphones?
The current cameras base their operation on several aspects. One of the most important is the focal aperture, which determines to a greater extent the quality of the photos taken in depends on what conditions.
In short, we could define the focal aperture as the value that measures the light input in the camera’s sensor. This is established inversely proportional to the degree of opening of the sensor, being brighter the smaller the focal number. Applicable to photography, we could say that a focal f/1.6 is brighter than a f/2.2. This does not mean that the latter has worse quality than the first because we must take another aspect into account: the depth of field.
The sensors with a less focal aperture (for example f/2.2 or f/2.4) have much more sharpness than those with greater aperture due to their ability to capture a deeper picture, this is the reason why most smartphones with Double chamber have sensors with different openings. One of the ways to compensate for this loss of sharpness is to integrate sensors with a greater number of megapixels, although this is not always the best indicator to assess the quality of a photograph.
By way of conclusion, we could say that none is better than another. However, the reduced size of the sensor in the cameras of mobile devices means that a greater focal aperture is preferred, to the detriment of aspects such as sharpness or depth of field, which is usually compensated by the megapixels or the subsequent processing of the photograph. Through software.