Skip to main content

Here's how Samsung's dual pixel image sensor raises the bar for mobile photography

Samsung Galaxy S7
Andy Boxall/Digital Trends
Samsung introduced the Galaxy S7 and S7 Edge yesterday at Mobile World Congress with a tremendous amount of fanfare. While notable improvements such as the ability to withstand water, expandable storage, and a bigger battery are sure to excite, the camera is where the real innovation lies.

After showing its camera prowess on last year’s Galaxy S6, Samsung doubled down with the Galaxy S7 and S7 Edge by improving it even more than we had imagined.

Both phones feature a dual pixel image sensor, and while we have already seen this technology in DSLRs, we have never seen it in a smartphone.

In a nutshell, dual pixel technology speeds up the autofocus by using 100 percent of the pixels, whereas traditional smartphone cameras use less than 5 percent. It almost seems absurd to have that kind of an improvement, but Samsung’s dual pixel sensor splits every single pixel into two photodiodes for phase and contrast.

So when capturing a photo on the Galaxy S7 or S7 Edge, the light from the lens is sent to two image sensors independently to adjust the focus, which is very similar to how the human eye works.

Samsung_Galaxy_S7_Dual_Pixel_Explained
Image used with permission by copyright holder

No pun intended here, but the dual pixel image sensor really outshines in low light situations. The Galaxy S6 already had fantastic low light performance, but the Galaxy S7 kicks it up more than a few notches. It captures 95 percent more light than the Galaxy S6 thanks to a 56 percent upgrade in the size of the pixels (1.44 microns) and an aperture of f/1.7.

Combine the dual pixel image sensor with the additional light, and the result is a smartphone camera that can autofocus super fast in any lighting environment.

Take a look at the two videos below to get a good idea of how much more improved the Galaxy S7 is over the Galaxy S6.

Galaxy S6 vs Galaxy S7: Camera Comparison ①
Galaxy S6 vs Galaxy S7: Camera Comparison ②

We’re looking forward to getting more hands on time with both phones to find out if they live up to the hype. Stay tuned.

Editors' Recommendations

Robert Nazarian
Former Digital Trends Contributor
Robert Nazarian became a technology enthusiast when his parents bought him a Radio Shack TRS-80 Color. Now his biggest…
5 phones you should buy instead of the Google Pixel 8 Pro
Someone holding the Bay blue Google Pixel 8 Pro.

Is the Google Pixel 8 Pro an excellent smartphone? Absolutely! It's quite possibly the best smartphone Google has ever made, and we weren't shy about heaping praise on it in our Google Pixel 8 Pro review. While its battery life isn't anything to write home about, and the temperature sensor is a bit of a whiff, the sheer quality of the camera, gorgeous design, strong specs, and promise of seven years of updates mean it's not a phone to miss out on.

But while the Pixel 8 Pro is a very strong smartphone, it's far from the only choice. In fact, if you're looking at the Pixel 8 Pro right now, there are five other smartphones you should consider buying instead of Google's most expensive flagship.
Google Pixel 8

Read more
I’m a lifelong iPhone user. Here’s what I think about the Samsung Galaxy S24
The Samsung Galaxy S24 Ultra and S Pen stylus on its screen.

Samsung and Apple typically release new smartphones at different times of the year. Samsung usually does it early in the year, while Apple waits until the fall ahead of the holiday shopping season. As always, Apple tends to release new iPhones that outdo the ones Samsung released earlier, and then when the calendar changes, Samsung comes back with something to better compete with Apple, and so forth.

Samsung has recently announced its Galaxy S24 series, which has sparked the curiosity of iPhone owners like myself. Many of us are currently exploring the features of these phones and seeing which ones aren't available on our iPhones, myself included. Some are entirely new, while others have been introduced on previous Samsung Galaxy S models. Although many seem promising, some may not be as appealing to iPhone users. Here are a few of the Galaxy S24 features I like — and a few I don't.
Circle to Search looks impressive
Circle to Search Andy Boxall / Digital Trends

Read more
You won’t believe how I improved my phone’s battery life
The back of the Samsung Galaxy S24 Ultra, resting against a post.

Galaxy S24 Ultra Andy Boxall / Digital Trends

Sorry for using that tired old clickbait headline, but in a roundabout way, it’s true. You genuinely won’t believe that I’m about to tell you something so headbangingly obvious about smartphone batteries.

Read more