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Huawei’s P20 Pro smartphone shoots Le Mans

About the P20 Pro

Three main cameras plus unique AI-driven image processing

The triple-cameras of the P20 Pro

The biggest company you might not have heard about?

Huawei, is a relatively recent name in the smartphone handset world, at least as a premium player, challenging the likes of Apple, Samsung and Sony. You may be surprised to hear that in handset volume terms Huawei has already overtaken Apple and is second only to Samsung. Huawei is one of the biggest companies you may never have heard of. It’s a massive multi-billion dollar developer and global supplier of telco network infrastructure equipment. It’s a Fortune 500 company and was only created by an engineer in China as recently as 1987.

Top-tier flagship featuring AI

The P20 Pro is Huawei’s flagship smartphone. It’s not an anonymous me-too design assembled from off-the-shelf components. Huawei designed its own cutting-edge Kirin 970 chip-set to optimise power consumption, maximise CPU power with its 8-core layout, and to incorporate a neural processing unit to power yje P20 Pro’s AI features. The P20 Pro has 6GB of RAM, more than almost all its competitors.

Triple-Leica lens cameras for the P20 Pro

Leica was brought in to ensure the camera optics were leading edge, too. Dual rear cameras are now commonplace, even starting to appear in some budget handsets. Huawei wasn’t stopping at two, however. The P20 Pro has three.

Why three cameras? The main camera has a 27mm-equivalent wide-angle general-purpose lens and a 40 megapixel colour sensor. A key innovation is the use of an unusual quad-bayer colour filter enabling image data to be processed in real time to form a higher quality lower resolution result. The 40 megapixel sensor delivers an optimised 10 megapixel image.

The use of an over-sized sensor with a huge number of pixels and then combining pixels to make a high quality lower resolution image may sound familiar; it’s what Nokia pioneered with its acclaimed Pureview technology. Huawei have clearly been inspire by this. But with Nokia’s demise in the wake of their take-over as part of Microsoft’s failed smartphone venture, Pureview development ceased. Huawei have taken the Pureview idea and taken it to the next level with the P20 Pro.


The second uses an optically-stabilised 80mm equivalent medium telephoto lens and an 8 megapixel colour sensor using a conventional Bayer colour filter. This is ideal for portraits and for bringing distant subjects closer. Combining the two colour cameras gives you a seamless 3x optical/digital lossless hybrid zoom.

Mono third camera

The unique third camera uses a high sensitivity 20 megapixel monochrome sensor to gather image data used for optimisations and effects when using the two colour cameras. Luminance data gathered is very high resolution and optimises noise and dynamic range in the colour cameras as well as providing data for depth estimation.

Put simply, the mono sensor cleverly compensates for the very small pixel-pitch of the two colour sensors.


The P20 Pro employs no less than three methods of automatic focusing. These are contrast detection, SLR-style phase detection, plus laser focusing.

Hybrid imaging

If the scene is reasonably still the P20 Pro can also automatically use data from multiple images to enhance sharpening, dynamic range and noise control.

DNG RAW file support

If you prefer to do your own post-processing, the P20 Pro shoots industry-standard DNG RAW files in Pro mode. Digital zooming isn’t available in this mode.


The P20 Pro has AI machine-learning, 8-core processing horsepower, and unique light gathering technologies at its disposal. These enable that sophisticated hybrid optical and digital zoom, automatic scene recognition, remarkable low light capabilities and very high-speed shooting. There are modes for:

  • Night photography; remarkable digital stabilisation means hand held exposures of several seconds are possible and you can do light painting and star trail photography.
  • Aperture – Depth of field effect adjustment; you can sleeplessly adjust dof after you’ve taken the shot.
  • Portraiture; identifying the subject’s face and seamlessly blurring the background.
  • High-speed sequential shooting at full resolution, or Burst mode; keep the shutter button pressed and the camera records, in my estimation 20-30 frames per second.
  • Video modes; up to 4K UHD recording at 30fps, super slo-mo 120fps at 1080HD and 720HD at faster rates up to 960fps, 3D mode (record a person’s face or an object by moving the camera around the subject).

It goes without saying there are HDR, panorama stitching, macro, document scanning and straightening, time-lapse recording, plus other modes. Even the wide-angle front-facing selfie camera offers a class-leading 24 megapixel sensor, plus variable ‘beauty’ adjustment, bokeh blur option and a ‘3D’ artificial lighting mode.

But how good is the P20 Pro?

I’m not doing an in-depth review of the P20 Pro here but I can offer some comment based on over a month using it as my main phone

Excellent screen

The 6.1 inch 1080 x 2240 pixels (408ppi) AMOLED screen is of the trendy edge-to edge ‘notch’ type, though the cut-out is relatively small. There is an ultra responsive and reliable fingerprint scanner at the base of the front. I personally like it there but I know plenty prefer the increasingly popular location on the back.

No heart rate sensor, headphone socket or wireless charging

There is no heart rate sensor or wireless charging. Fast charging requires a power source compatible with Huawei’s own Supercharge protocal rather than the more ubiquitous Qualcomm Quick Charge system.

There is no headphone socket, though a USB adapter is included but of course you can’t charge your phone while listening on wired headphones. Fortunately, the P20 Pro has a whopping 4000mAh battery, a third larger in capacity than usual. The Kirin chip-set is frugal on power, too and with normal usage I can get around two days life between recharges.

Pearlescent, slippery but water-resistant

While the back of the P20 is beautifully finished pearlescent-effect glass, it’s really slippery. I found the phone moving by itself, headed for the floor, too often and quickly invested in the excellent Huawei Smart Case. The P20 Pro is, however, protected from immersion in shallow water for short periods, which is reassuring.


Although there is no microSD card slot, 128GB onboard storage is standard. With 6GB of RAM and the powerful 8-core processor in the Kirin chipset the P20 Pro is impressively lag-free. Don’t let unspectacular synthetic benchmark scores put you off; the P20 Pro is very swift and maintains that performance even when lots of apps are open, thanks to the generous amount of RAM.

You get a USB-C port but it doesn’t appear to be a fast USB 3 type. Stereo speakers at the base, either side of the USB port. Pump out decent sound.

How about three P20 Pro cameras?

The clever people over at DxOMark rated the P20 Pro as the best smartphone camera yet and by quite a margin. I have no reason to question that conclusion.

Images produced by theP20 Pro are sharp, punchy and mostly free of the usual issues that plague smartphones, like burned-out highlights and blocked-out shadows. Low light sharpness and noise control are remarkable for a smartphone.

The P20 Pro’s AI can occasionally out-smart itself

However, there are some less-desirable traits that you need to keep an eye on. The AI-driven auto scene evaluation system is often a boon, but sometimes it can read things wrongly. I occasionally found extra bokeh blur added when I didn’t want it, colour and tone sometimes became over-cooked as if HDR was applied unnecessarily. The zoom operation requires tapping a small button in the screen or pinch-zooming. I’d like to have an option for a simple slider and a warning when you’ve exceeded the lossless zoom range.

Sheer ability

But these issues are far outweighed by the sheer ability of the P20 Pro. This is the first phone that I have been able to photograph low-flying birds in flight. I wasn’t that optimistic the P20 Pro would be any good panning Le Mans sportscars in fading light, but it redeemed itself admirably. Only distorted verticals, caused by the CMOS sensors and absence of a mechanical shutter, blotted the P20 Pro’s copybook but none of its competitors would have escaped this issue.

The P20 Pro is great fun to use as a camera, it’s also a stylish and fast phone. It’s the most accomplished smartphone image maker and deserves to be a favourite with photographers.


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