Smartphones with dual cameras can shoot portraits bokeh mode or bad zoomed photo, if the secondary unit is equipped with a telephoto lens. Devices with an additional monochrome sensor create better pictures in low light. A smartphone with three different cameras can do everything listed below at the same time.
1. Beautiful bokeh in portrait mode
On the left - a picture in the normal portrait mode, right - in bokeh mode. www.dxomark.com
Most often manufacturers supply their smartphone device a secondary camera for shooting beautiful portraits with bokeh. This effect, when the objects in the photo are in focus and the background behind the beautifully blurred. Bokeh is created as follows: one camera takes pictures while the other is a depth map frame field that allows you to vary the degree of background blur.
Shoot bokeh can and some phones with a camera, and then blur added software. But multi-chamber smartphones cope with the task much better. In addition, the presence of multiple cameras gadget eliminates the distortion persons in close-up shooting.
2. Using the applications of augmented reality
Component of the auxiliary chamber depth map is not just for a nice blur in portraits. She also useful applications of augmented reality: thanks to several chambers programs can more accurately position the virtual objects on the background of the real world.
3. Optical zoom lossless
Left - picture a regular camera smartphone, right - Secondary camera with a telephoto lens. www.dxomark.com
The smartphone can increase the photo in two ways. The easiest - digital zoom, which is used on all the gadgets with a single camera. Phone simply stretches the fragment captured photos. Naturally, the quality suffers and lots of details is lost.
But smart phones that have a secondary camera with a telephoto lens, can use the optical zoom. It allows you to zoom in on photos without compromising image quality, as well as provide sufficient depth of field.
4. Black and white photography
Left - the usual RGB-picture camera, to the right - a picture made monochrome module. www.dxomark.com
Some phones, in addition to the basic color camera equipped and monochrome. This allows you to make the highest quality black and white images for fans of old school. These photos have a more pronounced contrast, shadows on them deeper and brighter highlights.
When smartphone makes color image and then puts it on a monochrome filter - this is not it.
5. Shooting in low light
Black-and-white camera is needed not only to create monochrome images (after all, how often do you make them?), But also to improve quality photos in low light.
Monochrome sensor captures more details in low light conditions and provides a lower noise level. Then smartphone combines a detailed image data color camera. The output is colored, but fairly clear picture that does not spoil the lack of light.
6. best detail
Multiple cameras often allow to capture more detail than one. Each of them makes a separate image with different exposures, and then combined with the post-processing images into a single image. This technology is called HDR (High Dynamic Range - High dynamic range).
When taking such a combined photo smartphone uses the advantages of several types of sensors. For example, separate monochrome sensor detects light better than the basic RGB-camera. Color camera is not so sensitive to light, but it is used to color the picture. Uncolored, but a clear picture is combined with color - and is a more detailed image. With a smartphone, which has only one camera, so will not work.
7. Wider perspective
If you're shooting landscapes, such as sunsets against the backdrop of the ocean or the city skyline, you'll need a camera with a smaller focal length, in other words - a wide-angle lens. Many manufacturers smartphones establish such a camera as an auxiliary.
If zoomed photo somehow, but nevertheless it is possible with a digital frame processing, the wide-angle shot in digital format not recreate.
8. Creating a three-dimensional photo
Why do we see the world surround and can appreciate the depth and distance in space? Because we have two eyes - we are endowed with the nature of stereovision. Double and triple cameras are about the same. Some smartphones with auxiliary cameras are able to do three-dimensional images: simultaneously shoot a few pictures and then combine them into a common collage.
9. various special effects
Auxiliary camera smartphones extend the capabilities to add various special effects to photos. For example, can change the lighting portrait - simulate studio lighting to brighten the contours of the face, or you can create a spectacular accent lighting. And yet, using information from the secondary camera, the smartphone can separate the subject from the background and replace the latter at some other image.
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