With that out of the way, let us explore how a smartphone camera works. The principle is essentially the same as for DSLRs and smartphone cameras: the sensor is the device that records the images and displays them on the screen.
The aperture dictates how much light the sensor can absorb, which determines the amount of image light that reaches the actual sensor and ultimately the picture you see on the screen. This in turn is controlled by the shutter speed, which dictates how often the camera must take an image and the quality of the image.
Lets explore some of the differences between the two types of cameras. Smartphone cameras differ from DSLR’s in the way they are designed. A smartphone has no optical lens at all, instead it utilizes one of many image sensors located inside the device.
Smartphone Camera Sensor
This sensor may be a pinhole camera or a sensor that is part of the LCD screen itself. This sensor takes the image and compresses it into the pixelated form that we all know as a digital photograph. This digital photography ability allows for a number of different shutter speeds and focal length options.