PCMag editors select and review products independently. If you buy through affiliate links, we may earn commissions, which help support our testing.

Would You Attach These Giant Lenses to Your Phone to Take Better Photos?

Realme and Xiaomi showed off concept devices at Mobile World Congress that involve attaching a lens to your phone to get sharper shots.

 & Eric Zeman Managing Editor, Consumer Electronics

Our team tests, rates, and reviews more than 1,500 products each year to help you make better buying decisions and get more from technology.

Our Expert
LOOK INSIDE PC LABS HOW WE TEST
65 EXPERTS
43 YEARS
41,500+ REVIEWS
(Credit: Eric Zeman)

BARCELONA—Realme and Xiaomi introduced concept camera devices at Mobile World Congress that harken back a dozen years to something that Sony tried—and failed—to do: Lenses that attach to the back of your phone. Can these two companies do what Sony couldn't? Let's discuss.


Sony Started It

In 2013, Sony introduced the QX10 and QX100 cameras. They looked like small camera lenses but were, in fact, full cameras with small sensors inside but no viewfinder. The lens hooked onto the phone and talked to the phone via Wi-Fi Direct. I remember loving the idea, but Sony's execution was lacking. The connection between the lens and phone was tenuous at best, and the photos weren't necessarily worth the added hassle and expense. Sony discontinued the cameras in short order.

Fast-forward 12 years, and now Realme and Xiaomi are doing something similar but not quite the same.


Realme Relies on a Physical Connection

It's not the sensors or processing power that's holding up phone photography. It's the optics. The lenses on our phones simply don't have the light-gathering and resolving power that the detachable senses of DSLR and mirrorless cameras do.

(Credit: Eric Zeman)

Realme's idea is quite interesting. The concept phone has a physical connector that allows you to attach lenses directly to the phone itself. It lines up with the phone's internal 1-inch type sensor and allows you to use any full-frame mirrorless lens. Realme thinks pairing better optics with its phones' processing power will lead to better phone-based photos.

This opens up a huge world of flexibility when it comes to phone-based photography. Lenses allow for more creative or focused shots. On the downside, mounting a large, heavy lens to a phone looks awkward. I'm not quite sure how practical it would be to use it out in the real world, but surely plenty of photographers may be willing to give it a whirl.


Xiaomi Uses Magnets

Xiaomi's idea is much more like Sony's idea from 2013. Its lens adheres to the back of a phone magnetically and connects to the phone via what Xiaomi calls laser link technology rather than via direct contact. It contains its own micro four-thirds sensor but allows you to use your phone as the viewfinder. The modular optical system has an impressive aperture range of f/1.4 to f/11. Like Realme, Xiaomi's concept requires a phone that supports the lens—and it doesn't have one other than the prototype just yet.

(Credit: Eric Zeman)

It's great to see companies exploring new ideas for mobile photography. While Realme and Xiaomi are semi-recycling an old idea, bringing new imaging tech to phones is bound to find fans and use cases.

About Our Expert

Eric Zeman

Eric Zeman

Managing Editor, Consumer Electronics

My Experience

I’m PCMag’s Managing Editor for Consumer Electronics content, overseeing an experienced team of reviewers and product testers. I’ve been covering technology for more than 25 years. Prior to PCMag, I worked at outlets such as Android Authority, Fortune, InformationWeek, and Phonescoop. 

The Technology I Use

My main tool for getting work done is a 14-inch MacBook Pro. It’s a silent and fast machine with a good keyboard and excellent battery life. When I’m not using my laptop, you can find me working (and relaxing) with an iPad Pro. I’ve come to rely on its 5G data connection when traveling, which makes it an essential part of my workflow. 

I consider myself an audiophile. That means my office and living room audio setups are total overkill, featuring advanced receivers, turntables, and Polk Audio speakers complete with subwoofers for the best possible sound, whether I’m listening to music or watching movies. My favorite earphones for private listening are the Sony WF-1000XM6.

When on the go, I typically use an iPhone 17 Pro Max for photos, but I don’t need much of an excuse to pull out my Sony mirrorless for high-resolution photography—especially when shooting sports. 

Read full bio