Hello everyone,
“A photograph is a secret about a secret. The more it tells you the less you know.” In earlier days for taking pics one need to buy a separate digital camera since the pics produced by the feature phone were very poor. But in recent years with the advent of new technologies, the Smartphones like Huawei p20 pro, Samsung galaxy S9+. etc can take pictures similar to a professional camera. Let's see about some of the technologies used in modern smartphone camera.
Dual camera :
Dual camera feature use two cameras including a primary camera and a second primary camera. Primary camera does the same work or with little modification as it does in typical smartphone while the second primary camera normally has 2 features. The first is to add clarity of the image with the help of feature and the second is for purpose. And sometimes in a dual lens camera setup one camera is used to take the pictures and the other one is to capture the depth of field. There are different types of dual camera system available. Some of them are :
The Depth Sensor
In this system, the primary camera is accompanied by a second camera whose only function is to 3D map the area in front of the camera.
The Monochrome Camera
In this method, the primary camera is accompanied by a mostly identical secondary camera. Both cameras usually have identical sensors, apertures, lenses and focusing systems. The main and usually only difference between the two is that the second sensor lacks an RGB color filter. This means that the sensor cannot capture color information but on the upside, because there is one less thing blocking the sensor, the monochrome camera can capture more light.
The Wide-Angle Camera
The secondary camera gives you a crazy wide field of view that allowed the user to capture a much wider area without having to move back, or capture interesting perspectives afforded by such a wide-angle lens.
The Telephoto Camera
In this, the primary camera is paired with a second camera that has a telephoto lens. This is the exact opposite of the wide-angle camera system, wherein it actually lets you zoom into your subject instead of zooming out.
Triple camera :
Huawei p20 pro is the only phone with triple camera setup. the main RGB camera (40-megapixel) and monochrome snapper (20-megapixel) combine to create photos with greater dynamic range when used together. The third lens (8-megapixel) is a telephoto camera which allows for 3x optical zoom and Huawei’s own artificial intelligent (AI) stabilisation.
Optical image stabilization:
The image sensors used in smartphones are so much smaller than those in traditional cameras, they can struggle to get enough light in some conditions. As such they'll often end up using exposure times which increase the likelihood of camera shake and blurry images. Optical Image Stabilization (OIS) promises less blurry images and smoother video. OIS works by controlling the path of the image through the lens and onto the image sensor. This is done by understanding the camera's movement using sensors such as gyroscopes, and calculating how the lens needs to move to counteract this. The lens module is then generally moved sideways or up and down, normally by using electromagnet motors. All of this happens as the image is recorded to reduce camera movement blur.
Autofocus :
An autofocus (or AF) optical system uses a sensor to focus on an automatically or manually selected point or area.The lens is able to be moved back and forth so to vary the distance between the lens and the sensor. Used together with auto-focus technology, it means you’re able to capture sharper images without blurring on the sensor and loss of detail.