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Dual-camera smartphones are all the rage nowadays. They are on your iPhone 7 Plus, Huawei P9, Honor 8 and LG V20.  If you use two eyes to focus on an object, why use only one on your smartphone?

The way dual-camera smartphones work is rather interesting, and if the question you have at the back of your head is whether the additional camera helps with image quality, or if it’s just another marketing scam, then the definite answer is that yes, they do help you become a better sharpshooter. As to how these cameras work as one, here’s a low-down for you.



Credits: KeepSnap
Credits: KeepSnap

What dual-cameras are able to do better than single-cameras is the ability to focus in onto objects faster and with more precision. The speed at which the camera focuses on objects isn’t too big of a deal nowadays since flagships like the S7 Edge and Moto Z have incredibly fast focus speeds and nearly zero shutter lag.

However, the depth of field effect that you can achieve with dual-cameras is much more impressive. Think of the way you look at an object with 2 eyes and then with 1. With a single eye, it’s hard to gauge distance, with 2 eyes, you focus on a singular object better. With dual-camera smartphones,  you can achieve a bokeh effect that DSLRs achieve far more easily than smartphones. This helps with portrait photography to keep the subject in clear focus and blurring out the background well.

Wide-Angle View


Credits: Digital Trends
Credits: Digital Trends

The Huawei P9 doesn’t offer an enhanced angle with the dual-camera since they both have the same field of vision, but the iPhone 7 Plus will offer 2 cameras, each with their own field of vision, so when you combine them you can take telephotos with little lens distortion.

Sharper and More Vibrant Shots


In the case of Huawei P9’s camera, one camera can shoot in black and white whereas the other camera shoots in colour.  As a result, when you shoot a photo, both cameras the shots at the same time and both the coloured and the monochrome shots are stitched together using the native software. This results in clearer photos. What’s more interesting is that in dark environments where most smartphones begin to crumble, this stitching process actually creates a brighter photograph.

Better Zoom


Credits: itechnews
Credits: itechnews

More often than not smartphones have horrible zoom features. Zooming in often results in photographs with much poorer resolution and quality. To offer a better zoom experience, both Apple and LG have designed their phones with the same concept. They choose to use more than 1 type of lens, but each with different focal lengths. What you get is something called Optical Zoom, that allows you to narrow in on your subject without losing clarity. The iPhone 7 Plus allows you to zoom 2x and keep your full resolution.

Finishing Thoughts

Dual-camera smartphones are most likely going to be the future of smartphone photography. There better image quality, ability to zoom without losing any clarity, and the bokeh effect that seems so exclusive to DSLRs are to kill for. So if you are just too tired of lugging around your pro camera around, but you aren’t willing to settle for just another average smartphone camera, try grabbing a dual-camera smartphone the next time round.

About the Autv-modahor

A Dentist-To-Be Dabbling in Tech Journalism:

Zayne is a writer who reports for VR-Zone, Stuff Singapore and The New Paper on all things tech-related. Follow this geek on Twitter, Facebook or Instagram!

Zayne Seah
A tech geek going beyond specs.

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