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Posts Tagged ‘Smartphone’

Video: a teardown of OPPO’s periscope-style smartphone telephoto lens

29 Mar

Periscope-style tele lenses are the latest big thing in mobile photography as they allow to squeeze longer zoom factors than before into the thin bodies of high-end smartphones. Huawei just launched the P30 Pro with a 5x optical tele and OPPO’s Reno device with a similar setup is set to launch on April 10, 2019.

Despite still being more than a week away from the official launch date, a video has surfaced on the Chinese social media site Weibo, showing a teardown of the Reno’s rear camera, including the innovative tele lens, and it’s fascinating to see how much technology and optical engineering can fit into such a tiny module.

The periscope camera only measures 23.5 x 11.5 x 5.73mm, making it thin enough to fit into phones without the need for a big camera hump. It also doesn’t take up much space in the body overall and therefore does not get into the way of other components.

A close-up of the periscope-style camera array on the Huawei P30 Pro.

The module consists of the image sensor, lenses and the prism that diverts the incoming light into the lens and onto the sensor. Optical image stabilization is achieved through a magnetic coil that moved the prism. Optical image stabilization is also available on the camera’s primary wide-angle and image data captured by the two cameras can be combined to generate a 10x hybrid-zoom image.

We also already know that at least one version of the Reno will be powered by Qualcomm’s top-end chipset Snapdragon 855-powered and come with a 6.4-inch AMOLED display with 2340 x 1080 pixel resolution. So, overall the upcoming OPPO looks like it could be a real competitor to the P30 Pro.

Articles: Digital Photography Review (dpreview.com)

 
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A closer look at the Huawei P30 Pro, a quad-camera smartphone with plenty of power

28 Mar

Hands-on with the Huawei P30 Pro

Huawei has launched the P30 Pro a new Android smartphone powered by a Kirin 980 chipset and 8GB of RAM — and we’ve gotten our hands on it for a closer look.

Images, which are captured on an impressive quad-camera array, can be viewed and composed on a 6.47-inch FHD+ OLED display with very thin bezels, keeping the overall dimensions of the IP68-certified device at bay. The large 4,200mAh battery packed inside should provide plenty of run time and comes with quick charging. The P30 Pro also features reverse wireless charging and an in-display fingerprint reader.

As impressive as all the specs are though, it’s the camera that has caught all of the attention, and rightly so — it’s packing a lot of camera tech into a considerably small package. Click through the gallery to dig through the details of the device and its imaging capabilities. In the coming days we’ll have a sample images and a follow-up article on the details of its photographic capabilities.

Quad-camera

The P30 Pro comes with three camera modules and a single time-of-flight (ToF) laser sensor — Huawei counts the ToF sensor when calling it a quad-camera. The ToF-sensor is used to measure subject distance for better AF performance and more precise depth maps in bokeh mode. The primary camera features a 1/1.7-inch 40MP sensor that puts out 10MP images.

The lens is optically stabilized and features a fast F1.6 aperture. The equivalent focal length is 27mm. The primary module is accompanied by a 20MP 16mm-equivalent super-wide-angle (not stabilized, F2.2) and a 125mm equivalent 8MP tele with folded optics, OIS and F3.4 aperture.

Folded optics

OPPO has been teasing a similar concept for a couple of years now but with the P30 Pro Huawei is the first manufacturer to bring folded optics in a smartphone to market. The system allows to squeeze a much longer zoom reach into a thin smartphone body than would be possible with a conventional lens design.

Like with OPPO, the image sensor is placed vertically in the phone and the optical axis of the lens runs across the phone body instead of outwards. A mirror is used to reflect incoming light into the lens and onto the sensor at the right angle. This allows for a 125mm equivalent focal length – more than any other current smartphone and approximately a 5x zoom factor over the primary camera. With the help of clever software this can be expanded to a whopping 50x magnification.

Field-of-view fusion

The Huawei does not only rely on innovative hardware for zooming, however. Computational imaging methods play an important role as well. Field-of-view fusion combines the optical zoom with super-resolution algorithms that stack multiple frames for increased levels of detail.

The system intelligently adapts to the zoom factor selected by the user. Up to a 3x zoom factor it only uses super-resolution on the primary camera. At zoom factors between 3x and 5x an image is captured with the tele lens for best possible detail. The areas around the edges of the 5x frame are then filled in using image data recorded with the primary camera. Detail in those areas is improved by reconstructing textures and fine detail using a deep learning algorithm.

This is quite impressive as white balance, focus and other camera parameters have to be in perfect sync for good results. At a 5x zoom factor only the tele camera is used. For even longer reach super-resolution is applied to the tele camera for a maximum 50x zoom factor.

Low light capabilities

The image sensor in the primary camera is of the RYYB type and according to Huawei offers 40 percent better light sensitivity than a conventional RGB sensor. A fast F1.6 aperture and optical image stabilization, which is an industry-first for a sensor of this size in a smartphone, also allow for better light gathering in dim conditions. Huawei says in default mode the camera is capable of delivering good exposures at extremely low light levels of 1 lux and can reach astronomic equivalent ISO values of 409,600.

Improved bokeh mode

Like virtually all high-end smartphones these days the P30 Pro comes with a background-blurring portrait mode. Huawei’s camera engineers have implemented a couple of solutions that should provide better than usual results, however.

Super-resolution is used on the primary camera to capture good detail at a 2x zoom factor, providing a field of view that is more suitable to portraiture than the primary camera’s native 27mm.

An initial depth map of the scene is then generated using data from the primary and super-wide-angle cameras. The ToF-sensor, which can precisely measure subject distance in all light conditions, is then used to refine the depth map, providing better subject isolation and blur gradient and therefore a more realistic overall result.

Video improvements

There’s no 4k video recording at 60fps available on the P30 Pro but the device comes with a range of improvements for its video mode. Huawei says image stabilization has been improved significantly, making the phone usable as an action-cam replacement. Video capture in low light has been improved as well, with the P30 Pro achieving good video exposure at candle light.

There are a couple of other new video features as well. On the main camera adaptive frame rates have been implemented to ensure good sharpness and smooth footage in all conditions In bright light and when the device´s gyro detects camera motion footage is recorded at 60fps. In lower light, when longer shutter speeds are required, and/or the device is held in a very stable fashion, frame rates drop to 30 fps. We’ve previously seen a similar feature on the Google Pixel 3.

Additionally the 32MP front camera is capable of recording HDR video. Currently Apple’s iPhone XS Max is the only other device with this feature. The P30 Pro front camera used a quad-sensor and a single-frame HDR effect is achieved by using different exposures on different pixels on the sensor.

Articles: Digital Photography Review (dpreview.com)

 
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NBC’s Tonight Show filmed its latest episode entirely on the Galaxy S10+ smartphone

26 Mar

There have been iPad commercials shot with iPads and feature-length films made on smartphones, so why not add a late night television show to the list of jobs smartphones are taking over.

Tonight’s episode (March 25, 2019) of NBC’s Tonight Show will be shot entirely on a Galaxy S10+ smartphone and its wide-angle camera, a bold move to turn not just 30 seconds into a commercial, but the entire episode.

As you might expect, the show won’t be taking its normal format though. Rather than sitting at his desk throughout the evening, Fallon, his accompanying band, The Roots, and a few guests will be taking a tour around his favorite locations around New York City, from The Django jazz club to singing with Conor McGregor at a New York Irish pub, it’s very much an on-location shoot designed to showcase the photo and video capabilities of Samsung’s latest flagship smartphone.

In an interview with Variety, Samsung’s vice president of marketing, Patricio Paucar, unabashedly says the move was done to combat traditional advertising avenues:

‘We know consumer attention is being pulled in so many different directions today. It’s really hard to break through the noise and get people to engage in a way that best communicates the benefits of your products.’

In addition to the Tonight Show, Samsung will be showcasing a high volume of commercials for the S10+ across various networks and television shows, including NBC’s Today, Bravo’s Watch What Happens Live with Andy Cohen, Telemundo’s La Vox and E!’s Snapchat show The Rundown.

From the sample video above, the footage looks promising. It’d be interesting to see what’s going on behind the camera though and see what sort of rig the camera is arranged on.

Articles: Digital Photography Review (dpreview.com)

 
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3rd time isn’t a charm for Huawei, who once again gets busted faking smartphone photos

12 Mar

You would think Huawei would’ve learned its lesson by now, but apparently not. Yet again, the Chinese smartphone manufacturer has been caught suggesting DSLR photos were images taken with its upcoming P30 and P30 Pro smartphones in an advertisement.

In both 2016 and 2018, Huawei was caught trying to do the same thing by passing off a DSLR photos as images captured with its P9 and Nova 3 smartphones, respectively.

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This time, Hauwei shared a collection of advertisements, seen above, on its Weibo social media account to promote the launch of its upcoming P30 Pro smartphone on March 26th with a visual design that suggested the images were captured with the much-anticipated periscope camera system inside the devices.

In a result that’s surprising no one, it turns out the images weren’t actually captured with the smartphone. While it doesn’t take much of a pixel-peeper to tell the images weren’t actually captured with a smartphone, GadgetMatch took a closer look and confirmed the images weren’t just DSLR images, but stock photos that can easily be licensed by anyone.

Using reverse image search, GadgetMatch discovered the volcano image was first shared on Flickr back in 2009 by photographer Tom Pfeiffer and also available for use on Getty Images. Similarly, the duck image was captured on a DSLR by photographer Jake Olson from a photo shoot some years ago.

Not long after it had been called out, Huawei updated the advertisements with a disclaimer saying the ads were meant only as an example, not photos actually captured by the P30 or P30 Pro. Huawei also made the following statement to GSMArena regarding the ‘misunderstanding’ in the P30 Pro preview ads:

We’ve been made aware that there might have been some misunderstanding regarding our recent HUAWEI P30 Series teaser posters. We would like to reiterate that those are, in fact, only teaser posters, and are only intended to hint at the unique new features that will come with the HUAWEI P30 Series. Huawei has acquired the licenses to the original images and the posters are artistic renditions of said features only. We’d like to take this opportunity to thank the media for their interest in our posters. We have much to announce in the coming weeks. Please stay tuned!

Fool us once, shame on you. Fool us three times…we can’t get fooled again. Let’s see how long it’ll take until we’re inevitably running the fourth edition of this article.

Articles: Digital Photography Review (dpreview.com)

 
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Xiaomi and Light announce partnership to push smartphone photography forward

27 Feb

It looks like Light, the maker of the L16 multi-lens camera, is really putting its money on the mobile sector. A few days ago the company announced it was partnering with Sony to use the Japanese chip maker’s image sensor in its multi-camera modules.

Shortly after, at the Mobile World Congress HMD Global launched its Nokia 9 PureView smartphone which uses Light’s technology in its main camera. Nokia phones won’t be the only smartphones to come with Light-engineered cameras, however. Now Chinese manufacturer Xiaomi and Light have announced that they’ll collaborate in developing smartphone cameras and computational photography technology as well.

The partnership is still brand new, so it will likely take some time before we see the first results in the shape of final products on store shelves. That said, it’s good to see Light is working with multiple manufacturers to market its innovative imaging technologies, which will likely accelerate market penetration and innovation of multi-lens cameras alike.

Articles: Digital Photography Review (dpreview.com)

 
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OPPO has started mass production of 10x zoom smartphone camera module

27 Feb

OPPO has been teasing its periscope-design smartphone tele lens for two years now, but those who expected a product launch at MWC 2019 were disappointed once again. That said, we now at least know when a production device with the company’s 10x zoom system will be commercially available.

OPPO announced it has started mass production of the system and will launch a device with the 10x zoom camera in the second quarter of this year. There’s a slight caveat though: unlike most manufacturers, OPPO bases the zoom factor on the 16mm equivalent super-wide-angle. The tele lens comes with a 160mm equivalent focal length, hence a 10x zoom.

A rendered illustration from the above video showing the construction of the optical elements and sensor inside the periscope-style zoom lens.

Most other manufacturers don’t include the super-wide-angle in the zoom factor and instead use the primary camera, which on the OPPO model comes with a 48MP sensor and likely a 28mm focal length, as a reference.

The periscope design features a prism that reflects incoming light by 90 degrees and makes it possible to include such a ‘long’ lens in a thin smartphone body. The prism is also used for image stabilization. The primary comes with OIS as well and OPPO says the system is 73 percent more efficient than the previous iteration.

In addition the engineers have been able to maintain the dimensions of the older 5x prototype system, despite adding a super-wide-angle and using larger sensors.

Articles: Digital Photography Review (dpreview.com)

 
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Xiaomi launches Mi 9 smartphone with triple camera, up to 8GB of RAM

21 Feb

We are getting close to the start of the Mobile World Congress in Barcelona, which means we should see a number of high-profile mobile device launches over the coming days. Today Chinese manufacturer Xiaomi has thrown the first punch by launching its new Mi 9 flagship smartphone and, at least on paper, the new Xiaomi looks like an enticing option for smartphone photographers.

The Mi 9’s triple-cam setup is built around an 48MP Sony IMX586 1/2″ sensor which comes with a quad-bayer filter and produces 12MP image output. The lens offers an F1.75 aperture and 26mm equivalent focal length.

The primary module is joined by an ultra-wide-angle with 17mm equivalent focal length and F2.2 aperture. It uses a 16MP 1/3″ Sony IMX481 sensor. The tele offers a 2x magnification for a 50mm equivalent focal length and captures image information on a 12MP 1/3.4″ Samsung S5K3M5 sensor with 1.0µm pixels and a F2.2 aperture.

A combination of PDAF and laser is used for focusing and for very dim conditions a LED flash is on board. By default the Mi 9 records 4K video at 30 frames per second but the frame rate can be increased to 60 fps.

Images can be viewed and edited on a 6.39″ AMOLED display with 1080p+ resolution and hidden in a display notch you’ll find the 20MP front camera with F2.0 aperture which in some regions will use artificial intelligence to power a face-unlock function.

An in-display fingerprint reader and fast charging for the 3,300mAh battery are on board as well and Qualcomm’s new Snapdragon 855 chipset is paired with 6GB of RAM to power the Android operating system. Photos and videos can be stored on 64GB or 128GB of internal storage.

Pricing starts at approximately $ 455 for the 6/128GB version. The 8/128GB variant will set you back approximately $ 490. No information on exact pricing and availability outside China has been released yet.

Articles: Digital Photography Review (dpreview.com)

 
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Smartphone lens maker Largan is optimistic about multi-lens camera adoption

14 Feb

iPhone sales saw a drop in the last quarter of 2018 which inevitably impacts on Apple’s component suppliers. Taiwan-based Largan Precision is a major supplier of lens modules which are used in Apple’s iPhones among other devices.

According to a report in DigiTimes the company saw its fourth-quarter revenues and operating profits decrease by more than 20 percent but remains optimistic about the adoption of triple- and more lens camera modules on flagship smartphones. As a consequence Largan Precision is planning to expand its production capacity.

The good news for companies like Largan is that even with overall smartphone sales slowing down, thanks to the adoption of multi-lens cameras more cameras and lenses are required to fulfill demand. Back in June Largan CEO Adam Lin told reporters the following:

‘Generally speaking, the smartphone industry may have started to slow, but the demand for more camera lenses does not stop there…the same smartphone shipment quantity would require more camera lenses than in the past.’

In addition to Apple, Largan has also become a lens module supplier for other industry giants including Huawei, Oppo, Vivo, and Samsung. The company also says it’s begun shipping periscope lens modules and seven-lens camera modules, so we should be looking forward to see those technologies on production smartphones sometime in the near future.

Articles: Digital Photography Review (dpreview.com)

 
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ZTE appears to be getting ready to launch smartphone with 32MP front camera

01 Feb

Smartphone front cameras used to be overshadowed by their counterparts on the rear of mobile devices, offering low pixel counts, fixed focus lenses and generally simple specs. This is changing quickly, however, with some front cameras on the latest high-end smartphones featuring high-resolution sensors, AF-systems, computational bokeh modes, HDR and other advanced functions.

It looks like ZTE is now about to take things to a new level by launching a smartphone with a 32MP front-facing camera. The new device, which is said to be the ZTE Blade V10, has emerged in a regulatory filing on China’s TENAA website and is thought to use Samsung’s ISOCELL GD1 sensor.

The latter comes with a 0.8 micron pixel pitch and pixel-binning technology, merging four adjacent pixels into one for better dynamic range and lower noise levels. The sensor also comes with real-time video HDR, so the ZTE could be a good option in difficult high-contrast scenes.

Other specs put the new model into the mid-range bracket of the market. There’ll be a 6.3-inch full-HD+ LCD display, an octa-core chipset and a 3,100mAh battery, according to the filings. The main camera comes with a 16MP primary sensor and a 5MP secondary sensor, likely for depth sensing.

Articles: Digital Photography Review (dpreview.com)

 
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Samsung to acquire smartphone camera tech company CorePhotonics

29 Jan

According to sources familiar with the matter, Korean smartphone maker Samsung is close to acquiring Israel-based technology company CorePhotonics. The deal could be worth $ 150 million.

CorePhotonics isn’t a company end consumers are too familiar with, but it has been one of the pioneers of the multi-camera trend in smartphones. Most notably it was the company behind OPPO’s 5x zoom module and was likely also involved in the creation of OPPO’s latest 10x zoom camera. It’s unknown at this point what the acquisition would mean for the relationship with OPPO.

The CorePhotonics name also appeared in the news when the company filed several law suits against Apple for patent infringement. The legal dispute is still ongoing.

Zoom reach is one of the very few areas where smartphone cameras still can’t keep up with stand-alone compact cameras and is likely going to be an important differentiator for brands when launching the next generations of smartphones. In this context the acquisition makes a lot of sense for a manufacturer like Samsung.

Articles: Digital Photography Review (dpreview.com)

 
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