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Sunday 1 October 2017

Weekly poll: Sony Xperia XZ1, hot or not?

Sony has updated its flagships piecemeal – the XZ added 2160p video capture that the X Performance was missing, the XZs improved the camera yet again and now the Xperia XZ1 upgrades the chipset to 2017 standards.
Did Sony cover everything you wished for with this latest iteration of X phone? The obvious thing that it’s missing is a bezel-less design that is standard for late 2017. A dual camera may be another, but by the sound of it the new Pixels will stick to one cam per side so dual cameras are not yet mandatory.
Still, we haven’t forgotten that Sony has been the one pushing things we now considered standard – things like waterproofing and stereo speakers. While those are no longer unique, no other brand has touched Xperia’s 960fps slow-motion mode.
And love it or hate it, the Xperia design is certainly recognizable. Plus, the Triluminos display (now with HDR10 support) is one of the best LCDs on the market. We don’t mind so much that it doesn’t have QHD resolution.
Want to know what we think of the Sony Xperia XZ1? Check out our video review below.
Okay, your turn – is the XZ1 the premium device it claims to be or is it a dud?

Counterclockwise: Nokia 3310 and and its family tree

In honor of the 3G-enabled Nokia 3310, we wanted to trace the history of one of the best-known phone models. What made it so popular and is it still relevant today?
Our story begins with the Nokia 3110, the first phone to feature the Navi-Key, a smart button below the screen whose function changes in each menu (the label on the screen tells you its current function). This became the primary way to navigate Nokia's feature phone interface, surviving well into the touchscreen era (when the physical button was replaced by the touchscreen itself).
Nokia 3110
Nokia 3110
Two years later came out the Nokia 3210. With 160 million units sold, it is to this day one of the most popular phones ever. Having Snake pre-installed probably helped.
You can see the familiar design start to take shape as 3110's external antenna was chopped off. This was one of the first phones to do it, but reception suffered a bit.
Nokia 3210
Nokia 3210
Finally, the Nokia 3310 came to be. Announced 17 years ago (on September 1, 2000), this became a legend of a phone... and the subject of more than a bit of exaggeration. Its sales total 126 million, not quite as popular as the phone it replaced.
Anyway, the selection of games was updated, with Snake going up to version 2. The 3310 was also popular because it supported threaded view for SMS messages and texts could be as long as 459 characters (split between multiple messages).
Nokia 3310
Nokia 3310
The following year, Nokia introduced the 3330, a version with CSD. What's that, you ask? It's dial-up for cell phones and it allowed the phone to connect to the Internet - or at least a stripped down version known as WAP.
Nokia 3330
Nokia 3330
Moving on, the Nokia 3410 was the first phone by the company to support Java apps. It had two Navi-Keys for improved usability (the second key replaced the fixed-function back / delete key).
The 3410 also boasted 3D graphics, one of the first mobile phones to go beyond 2D. This despite its (from today's perspective) primitive monochrome screen with 96 x 65px resolution. 3D was used in animated screen savers and Munkiki's Castles (a game).
Nokia 3410
Nokia 3410
The Nokia 3510 and 3510i were both introduced in 2002. The i model ran Nokia Series 30 with a 96 x 65px screen - but in color this time, a whopping 4,096 hues!
Nokia 3510 Nokia 3510i
Nokia 3510 • Nokia 3510i
The Nokia 3100 followed in 2003. It ran the more advanced Series 40 software and could take photos. But it's not quite that simple - the phone lacked a built-in camera, instead one was plugged in via the Pop-Port.
The Nokia Fun Camera PT-3 supported a few other Nokias and ran on 2 AAA batteries... yeah, really. The manual is a fun, nostalgic read.
You could capture photos in 640 x 480px resolution (VGA), framed through an optical viewfinder (no, you didn't get a preview on the 128 x 128px screen). The camera had a display, showing the battery and memory capacity (which was 8MB by the way, enough for 50 photos or so).
Nokia 3100
Nokia 3100
Well, that's all the pieces in place more or less. The 2017 version of the Nokia 3310 has larger, sharper screen and the camera is built-in (as is 64MB of storage, woah). The software has more polish overall, still featuring the Navi Keys. And just like that, Nokia feature phones still manage to excite people two decades after the 3110 launched.

Swipe Launches Elite 2 Plus 2017 Smartphone with 8MP Camera & 3000mAh Battery for Rs. 3,999

Swipe has been constantly launching decent 4G VoLTE smartphones under Rs. 5,000. Today, the company came up with the Swipe Elite 2 Plus 2017 as the successor to 2016 launched Elite 2 Plus. Just like its predecessor, the new Elite 2 Plus 2017 also comes with a polycarbonate shell. It is priced at Rs. 3,999 and comes only in Black color option. Interestingly, the device is sold exclusively through Snapdeal. While other manufacturers are launching low-cost smartphones with Android 7.0 Nougat, the Swipe Elite 2 Plus 2017 still runs on Android 6.0 Marshmallow out of the box.
It sports a 5-inch IPS display on the front with VGA (640 x 480) pixels resolution. The listing mentioned the device to come powered by Qualcomm quad-core processor clocked at 1.5GHz. We can expect this processor to be one of the Snapdragon 200-series chipsets. As seen on the other low-cost smartphones, the Swipe Elite 2 Plus 2017 also offers 1GB of RAM and 8GB of internal storage. There is also a MicroSD card slot for expanding the storage additionally up to 32GB. Beneath the display are the three capacitive navigation buttons.
In the camera department, the Elite 2 Plus 2017 sports an 8MP camera on the rear with LED flash and a 5MP camera on the front for selfies. Even with the Rs. 3,999 price tag, the smartphone comes backed by a 3,000mAh non-removable battery which should give more than a day-long battery life. It measures 145 x 72.8 x 9.9 mm and weighs 150 grams. The volume rocker and power button are placed on the right edge of the device. Connectivity options include 4G VoLTE, Wi-Fi, Bluetooth, GPS, USB OTG, FM Radio, 3.5mm audio port, and MicroUSB 2.0 port.
Last month, the company also launched the Swipe Elite 4G smartphone with similar specifications. It is also priced at Rs. 2,500 but is sold through Flipkart. It came with a slightly better 5-inch display with FWVGA display. While rest of the specifications remain same, the battery capacity is only limited to 2,500mAh. It even got a Corning Gorilla Glass protection on the front

Huawei Nova 2i with 18:9 MaxView Display & Four Cameras Launched in Malaysia

arlier this month, Huawei launched the Maimang 6 smartphone in China. It is the first smartphone from Huawei to feature the MaxView display with 18:9 aspect ratio. The smartphone also came with four cameras – two on the front and other two on the rear. The leaks have mentioned the Maimang 6 to launch in the international markets as Mate 10 Lite. Even Honor is said to launch to a new smartphone with the same MaxView display and four cameras. Today, the company has officially launched the same Maimang 6 as Huawei Nova 2i in Malaysia.
It will be available in Graphite Black, Prestige Gold, and Aurora Blue color options. The device is priced at MYR 1,299 and will go on sale starting October 13th in Malaysia. Talking about the specifications, the Huawei Nova 2i sports a 5.9-inch IPS display that fits into a regular 5.5-inch frame. It offers Full HD+ (2160 x 1080 pixels) resolution with a pixel density of 407 PPI. The fingerprint sensor is placed on the rear of the device.
Under the hood is the 16nm Kirin 659 octa-core processor featuring 4x Cortex-A53 cores clocked at 2.36GHz and 4x Cortex-A53 cores clocked at 1.7GHz. The device packs 4GB of RAM and 64GB of internal storage that can be expandable maximum up to 128GB. It runs on Android 7.0 Nougat out of the box with EMUI 5.1 laid on top. On the rear is the 16MP + 2MP dual camera setup with LED flash. On the front is the 13MP + 2MP setup for capturing selfies with bokeh effect.
The camera app on this device includes moving picture mode which captures 2-second mini-movies while capturing photos. It is backed by a 3,340mAh that is rated to give up to 20 hours of talk time and lasts up to up to 550 hours on standby mode. The Nova 2i measures 156.2 x 75.2 x 7.5 mm and weighs 164 grams. Connectivity options include 4G LTE, Wi-Fi 802.11 b/g/n, Bluetooth 4.2, GPS, GLONASS, A-GPS, NFC, 3.5mm audio jack, and MicroUSB 2.0 port.

Apple iPhone 8 Plus review

Introduction

In another place and another time, the Apple iPhone 8 Plus would have been one of the hottest things around. Swathed in hype, causing a stir, bringing the free ride of the competition's flagships to an abrupt and painful halt.
Apple iPhone 8 Plus review This turbo-powered, glass-clad, sharp-shooting and fast-charging piece of a smartphone classic seems to have everything. Except... time. No, it's not going anywhere. It's just that its days as one of the hottest things around are numbered. Now, we're sure you know what we mean, so let's slow down and start over. Time isn't always a luxury - just don't tell this to an iPhone 8 Plus.
The 8 series is about to leave generations of iPhones behind. It's been ten years of refining the visionary iPhone. We saw it grow bigger, better, more durable, more powerful. Apple kept adding more screen real estate, more processing power and advanced camera features. In spite of all novelties, the iPhone essence was always there, underneath the fancy add-ons. Now, that's about to change.
Apple iPhone 8 Plus review Apple isn't just on the verge of breaking clean from the past. The future has already begun with the iPhone 8 and 8 Plus. But it doesn't belong to them.
Back to the here and now, the Apple iPhone 8 Plus comes across as the usual incremental upgrade. The 8 Plus gets to keep its overall styling but swaps aluminum for glass and finally gets wireless charging. The new A11 Bionic chipset boasts an extra two power-efficient cores and, for the first time ever, an in-house GPU. Then the base iPhone storage has been doubled and now starts at 64GB.
Browsing the camera specs leave the wrong impression of copy and paste from the iPhone 7 Plus, when in fact both of the dual 12MP sensors have bigger pixels, backed by a superior flash and an exclusive new Portrait Lightning mode, which hopes to make the portrait shots look even better.
Finally, the screen size and resolution might be the same, but Apple has added HDR10 and Dolby Vision support, as well as iPad's True Tone color adjustment for life-like color presentation.

Apple iPhone 8 Plus key features

  • Body: Aluminum 7000 frame, reinforced glass front and rear, IP67 certified for water and dust resistance. Gold, Space Gray, and Silver color options.
  • Screen: 5.5" 16M-color LED-backlit IPS LCD screen of 1080p resolution, 401ppi. True Tone adjustment via four-channel ambient light sensor, wide color gamut, 3D Touch
  • OS: Apple iOS 11
  • Chipset: Hexa-core (2 Monsoon + 4 Mistral) 2.09GHz Apple CPU, tri-core Apple GPU, 3GB of RAM, Apple A11 Bionic SoC
  • Camera: Dual 12MP camera: wide-angle F/1.8 + telephoto F/2.8, live bokeh effects (including Portrait mode and Portrait Lightning), optical image stabilization, 2x lossless zoom, quad-LED flash with slow sync, phase detection auto focus, wide color capture
  • Video recording: 2160p@60/30fps, 1080p@30/60/120/240fps video recording
  • Selfie: 7MP F/2.2 front-facing camera with BSI sensor and HDR mode, 1080p@30fps video
  • Storage: 64GB or 256GB of built-in storage
  • Connectivity: 4G LTE Cat.16 (1Gbps); Wi-Fi a/b/g/n/ac; Bluetooth 5.0; Lightning port; GPS with A-GPS, GLONASS, GALILEO, QZSS; NFC (Apple Pay and for the first time for NFC tag reading too)
  • Battery: 2,691mAh battery, wireless charging (Qi compatible)
  • Misc: Stereo speakers, Pressure-sensitive Home key with fingerprint scanner, Taptic Engine

Main shortcomings

  • Design is getting long in the tooth now being used for the fourth year in a row
  • Big screen bezels (soon to look even bigger in comparison to the iPhone X)
  • No 3.5mm audio jack (ships with a Lightning-to-3.5mm adapter)
  • No microSD slot
  • iTunes is still required for manual music upload
  • No fast charger provided in the box (and the optional one is expensive)
  • Video camera still recording mono audio only
Indeed, the iPhone 8 Plus seems like a regular update but with the right touches in the right places. The screen bezels are here to stay but probably for the last time. The audio jack is already a goner, that's for sure, while memory expansion was never meant to be.
Some may still have gripes with the over-reliance on the iTunes software for music transfer to the phone, but in times of Apple Music, Spotify, Google Music, and Groove - we think this is another issue we mention one last time.
Apple iPhone 8 Plus review The iPhone 8 Plus is fresh off the assembly lines, but the iPhone X is just around the corner, while the iPhone 7 Plus is still relevant and cheaper.
Decisions... Is the upgrade worth it? Is a switch worth it? Should I wait? The choice has never been harder, but the answers start rolling right after the break.

Retail package

Apple has been consistent with the bundle for over 5 years, and the box of the iPhone 8 Plus hides no surprises. Inside you'll find a somewhat dated 5V/1A plug, a Lightning cable, a pair of EarPods and a Lighting-to-Analog jack adapter.
To take advantage of the fast charging support, you'll need to spend on a more powerful MacBook charger. However, the latter is available only with a USB Type-C plug so that a USB-C-to-Lightning adapter will be in order too. That's an extra 100 bucks or so to make use of a feature, which supposedly came built-in. Not to mention that the MacBook charger is way too big compared to a normal phone charger.
Apple iPhone 8 Plus retail package - Apple iPhone 8 Plus review Apple iPhone 8 Plus retail package - Apple iPhone 8 Plus review
Apple iPhone 8 Plus retail package

Apple iPhone 8 Plus 360-degree spin

The iPhone 8 Plus measures 158.4 x 78.1 x 7.5mm which is a hair (0.2mm, to be precise) larger than the 7 Plus in each direction. This means most of the old cases won't be a perfect fit (mostly in depth though as our experiments confirmed).
Apple iPhone 8 Plus next to the iPhone 7 Plus - Apple iPhone 8 Plus review Apple iPhone 8 Plus next to the iPhone 7 Plus - Apple iPhone 8 Plus review Apple iPhone 8 Plus next to the iPhone 7 Plus - Apple iPhone 8 Plus review Apple iPhone 8 Plus next to the iPhone 7 Plus - Apple iPhone 8 Plus review
Apple iPhone 8 Plus next to the iPhone 7 Plus
The new 8 Plus model has gained 14g of weight and is a pretty heavy set at 202g.
Compared to the bezel-less iPhone X and the Galaxy S8 boasting 5.8" screens, the iPhone 8 Plus is noticeably bigger. The iPhone X is 15mm shorter and 7mm narrower, while the Galaxy S8 shaves off 10mm in both directions.
Finally, the size gap between the regular iPhone 8 and 8 Plus is significant - 20mm in height and 10mm in width. But that's not exactly breaking news.

Design

Apple was the first maker to push the glass-sandwich design with the iconic iPhone 4. The unthinkable became possible (using glass on a phone), and it has since become mainstream. It was somewhat short-lived though, replaced in just two years by the all-metal iPhone 5.
Fast-forward five years to find Apple pretty much the last company revisiting all-glass builds to catch with the likes of Samsung and many others who adopted glass and wireless charging years ago. Better late than never we guess.
Apple iPhone 8 Plus review So, what's up with the iPhone 8 Plus? Not much, at least over at the front side. Everything else is as we left it on the iPhone 7 Plus: the footprint, screen size, sizeable bezels, physical Home key, sensors, and the selfie camera placement. The oleophobic coating against fingerprint smudges is a given, and that's something we wish to see on every flagship out there. Oh, and the 8 Plus is still IP67-grade water resistant.
The front glass ends on a subtle curve - a departure from the once popular 2.5D finish. This would make applying screen protectors on the iPhone 8 Plus easier and let them last longer.
Apple iPhone 8 Plus review The rear glass is the highlight of the refined design. It's flat for the most part but also ends on a subtle curve where it meets the aluminum frame. There are no antenna bands you can notice, as these are now well hidden beneath the glass.
Thanks to this change of heart Apple is finally bringing wireless charging - a feature rumored to be coming with quite a few iPhones already. The team over at Cupertino chose the Qi standard, so the iPhone 8 Plus is compatible with all existing Qi chargers - the most common standard for the technology. You bet Apple will be pushing some fancier units later this year. In 2018 Apple hopes to, we will likely also see a proprietary Apple wireless charger that will replenish a Watch, an iPhone, and the AirPods all at once all while showing the charging progress indicator of all three on the iPhone's screen. This won't be easy as allegedly, the Qi charging standard would have to be adjusted to accommodate that feature so that it remains universally compatible. Only time would tell if that will really happen.
The dual-camera on the iPhone 8 Plus uses new sensors though it keeps the same specs for both - 12MP with f/1.8 lens for the wide-angle and 12MP with f/2.8 lens for the telephoto cam. There are some new cool portrait effects and a slow-sync flash though. As far as the hump is concerned - it's still there, bulging over everything, but protected behind sapphire glass (which is not that hard to scratch mind you).
Apple iPhone 8 Plus review Apple likes to tout its new reinforced glass panels used on the iPhone 8, 8 Plus, and X as the toughest glass on the planet. If drop tests all over YouTube are anything to go by, the new Apple phones somehow fail to live up to the hype, though. Even worse, our own 8 Plus got its screen scratched by the smaller iPhone 8 we stacked on top of it for a quick comparison picture.
The final piece of the Apple iPhone 8 Plus is the Series 7000 aluminum frame running along the sides. This is the only place you can see the beginning and the end of the antennas. The frame has a sandblasted-like finish and improves the otherwise slippery grip.
Apple iPhone 8 Plus review The iPhone 8 Plus with its prominent screen bezels is one of the largest 5.5-inchers on the market. It's not huge by any means, it just feels oversized, and it is heavy. But handling the 8 Plus is as premium experience as ever, the build is solid, and the profile thin enough. The aluminum frame boosts the grip, while the glass panels are sweet on the eyes. Even though the 8 Plus is not comfortable to work with just one hand, the added one-hand-friendly gestures will surely help in improving the overall usability.
Handling the iPhone 8 Plus - Apple iPhone 8 Plus review Handling the iPhone 8 Plus - Apple iPhone 8 Plus review
Handling the iPhone 8 Plus

Device overview

A quick look over the iPhone 8 Plus reveals no surprises. Most of the front is taken by the 5.5" IPS LCD screen and its bezels. Above the display is the earpiece, which also serves as a speaker, the FaceTime camera, and a couple of sensors.
Below the screen is the Home Key, force-press enabled just like on the iPhone 7 series. The ultra-fast fingerprint sensor, also known as Touch ID, is embedded within that key.
The iPhone 8 Plus - Apple iPhone 8 Plus review the earpiece and the FaceTime cam - Apple iPhone 8 Plus review the Home key - Apple iPhone 8 Plus review
The iPhone 8 Plus • the earpiece and the FaceTime cam • the Home key
The left side of the iPhone 8 Plus has the silencer toggle and the volume keys. The power/lock button and the nanoSIM tray are on the right.
The left side - Apple iPhone 8 Plus review the volume controls - Apple iPhone 8 Plus review the right side - Apple iPhone 8 Plus review the SIM tray - Apple iPhone 8 Plus review
The left side • the volume controls • the right side • the SIM tray
The top is completely bare. The Lightning port is at the bottom flanked by two grilles - one for the mouthpiece, and the other one for the second speaker.
The top - Apple iPhone 8 Plus review the bottom - Apple iPhone 8 Plus review the Lightning port - Apple iPhone 8 Plus review
The top • the bottom • the Lightning port
Finally, the dual-camera is seen on the back, accompanied by a quad-LED dual-tone flash.
The back of the iPhone 8 Plus - Apple iPhone 8 Plus review the dual-camera setup - Apple iPhone 8 Plus review the camera hump - Apple iPhone 8 Plus review
The back of the iPhone 8 Plus • the dual-camera setup • the camera hump
There is nothing out of the ordinary so far and no wonder. Apple is now using this design for the fourth year in a row after it was first introduced on the iPhone 6. Sure, the back is all glass now, but you would never guess you are holding the latest iPhone just by looking at the front.

Understanding the dual camera systems on smartphones

Dual camera systems on smartphones have been around for several years now. Some of the earliest examples include the weird 3D camera on the HTC EVO 3D. Then it was HTC again who introduced it in a different form on the One m8. Then LG decided to drop in with its cool wide-angle lens with the G5 and the same year, Apple decided to take in the other direction by adding a telephoto lens on the iPhone 7 Plus. Meanwhile, Huawei had other ideas, with its Leica branded monochrome camera on the P9.
But just how many types of dual camera systems are out there and how do they differ from each other? Most importantly, are they any good or is it just a passing fad? Let’s find out.

The Depth Sensor

We will start with this as this is the most basic form of dual camera system. In this system, the primary camera is accompanied by a second camera whose only function is to 3D map the area in front of the camera. As you may know, we are able to see in 3D because we have two eyes with slightly different perspectives that help us convey depth, especially for things that are close to us.
The HTC One m8 The secondary camera in this system works similarly. With the second camera, the system can now tell roughly how far the objects in front of it are with respect to each other. This information is then used to separate the foreground subject from the background.
The most common use of this technique is to create a shallow depth of field effect. While it’s something that comes naturally to DSLR cameras with their big sensors and big lenses, the small smartphone cameras cannot achieve the same shallow depth of field. So instead, this technique is used to first figure out the borders of the foreground subject and then apply an iris blue effect on everything else. This gives the illusion of shallow depth of field.
Sample from the HTC One m8. Didn’t always work this well. While sound in theory and occasionally in practice, this technique has its pitfalls. Unless your subject is a cardboard cutout, it will have depth to it and because this depth is not as much as the depth between the entire subject and the background, the camera occasionally ends up blurring the edges of the subject as well. Even when it does work reasonably well, it never quite looks natural, especially since most smartphone cameras that have this feature apply an even blur on everything in the background whereas with a DSLR, the intensity of the blur increases with the distance from the focus point.
Camera systems with a dedicated depth sensor is one of the rarest types of dual camera systems. The first popular use of it was seen on the HTC One m8 but these days only the most basic smartphones, such as the Honor 6X or the Lenovo K8 Plus, can be seen using a dedicated depth sensor lens.

The Monochrome Camera

A slightly more popular implementation of the secondary sensor is the monochrome camera. In this method, the primary camera is accompanied by a mostly identical secondary camera. Both cameras usually have identical sensors, apertures, lenses and focusing systems. The main and usually only difference between the two is that the second sensor lacks an RGB color filter. This means that the sensor cannot capture color information but on the upside, because there is one less thing blocking the sensor, the monochrome camera can capture more light.
Huawei P9 Every time you take a picture, the camera system combines the output of both cameras and layers them into one image. In theory, the two images when combined will have greater detail and reduced noise. Alternately, you can also just shoot from the monochrome camera and get slightly better image quality at the cost of all the color information.
One of the first examples of this system was the Huawei P9 and since then, few other devices have also shipped with this system. To us, the advantages of this system are nebulous at best. While sound in theory, we can’t really say for sure if the feature does really work as advertised. We have seen some good results with this system in the past but its hard to tell if it was the dual camera doing all the work or it was just good image processing system.
Monochrome image from P9 There is no real disadvantage to this system and we do appreciate that it’s the only one of the systems discussed here that tries to do anything about the actual image quality instead of adding additional features but still, we would rather take some zooming ability over marginally improved image quality.

The Wide-Angle Camera

Debuted first on the LG G5 early last year, the wide-angle camera is pretty much what it sounds like. To take LG’s example, the phone had a 16 megapixel, 29mm equivalent f1.8 primary camera and 8 megapixel, 12mm equivalent f2.4 secondary camera. The 12mm focal length gave the secondary camera a crazy wide field of view that allowed the user to capture a much wider area without having to move back or capture interesting perspectives afforded by such a wide-angle lens.
LG G5 We have mainly seen this on LG phones, with Motorola recently incorporating it in the X4, and we are fans of how it works. The wide-angle lens gives a very unique perspective that you simply don’t get at all on smartphone cameras and apart from having practical value (capturing a large group of people from up close) also lets you capture some really cool looking shots.
The early iterations of this system did have its disadvantages. On the G5 and V20, the ultra wide-angle lens image quality was nowhere near as good as the primary camera and also had significant barrel distortion that made it look like the footage from a GoPro with a fish-eye lens. However, LG has been steadily improving the system with every iteration and in its latest avatar on the V30, the secondary lens not only has highly respectable image quality but also significantly less distortion around the edges, making it far more useful.
Wide-angle on top and ultra wide-angle below from G5 With good implementation, this system does have the potential to be a really cool second camera system for particular scenarios and we wish more manufacturers adopted it.

The Telephoto Camera

The most common of all the dual camera systems today is the telephoto camera. In this, the primary camera is paired with a second camera that has a telephoto lens. As you can tell, this is the exact opposite of the wide-angle camera system, wherein it actually lets you zoom into your subject instead of zooming out.
Apple iPhone 7 Plus Since the iPhone 7 Plus, manufacturers have stuck to using a 2x factor for the second telephoto lens. This means the secondary lens has twice the focal length of the primary lens, giving you an instant 2x optical zoom.
There are many advantages of this system. First is the most obvious, where you get 2x lossless optical zoom. Zooming on smartphones has largely been digital until now but with this you get to quickly move 2x closer to your subject with very little quality loss. Any further zooming is done digitally still but because the digital zoom is now being applied on top of 2x optical zoom, it gives much better results.
Wide-angle above and telephoto below from the iPhone 7 Plus Shooting with a telephoto lens also has other advantages. Telephoto lenses are more suitable for portraits than wide angle as they have less distortion and is more flattering to the subject. Most manufacturers go one step ahead and also implement the background blur effect that we saw with the very first system we talked about today (the primary lens now acts as the depth sensor). The combination of a telephoto lens and background blur gives far superior results than just applying background blur on wide-angle images.
Of course, this system too has its disadvantages. So far none of the manufacturers have been able to get complete parity between the two cameras. When the iPhone 7 Plus launched last year, it had a much smaller aperture (f2.8) compared to the main camera (f1.8) and no OIS on the secondary sensor. The iPhone 8 Plus ships with similar arrangement (although the sensors are better this year) and even the iPhone X still has f2.4 for the second camera (although it does have OIS). The Note8 was the first phone with a telephoto camera to have OIS but even then it’s still f2.4 (compared to f1.7 on the main lens) and the second sensor is slightly worse even if it has the same resolution.