Smartphones with a dual front camera

Double

— the presence of two frontal lenses in the device at once. Additional one can have different specs and specifics of application. So, in some models, it differs in specs from the main one, has a lower resolution and serves to obtain additional information about the image; this information is used in post-processing, it allows you to change the focus and depth of field of the finished images. In other models, the second lens is almost identical to the first, but it shoots not a colour, but a black and white image; this makes it possible to obtain high-quality black and white images, in addition, the image can also be used for additional processing of a colour image. The specific features of dual cameras in each case should be specified separately, but such equipment is anyway considered a sign of an advanced smartphone.