what is a dual camera on a cell phone


what is a dual camera on a cell phone插图

Two cameras on the rear
A dual camera phone is packed withtwo cameras on the rear. Out of these two,one is a primary camera and the other acts as a secondary camera. This camera-combo strives to make a picture more dynamic and intense by adding minute details,which a single camera fails to add.

What phones have dual cameras?

The best phones with dual front cameras (September 2019)Google Pixel 3/Pixel 3 XL. The Google Pixel 3 and Pixel 3 XL may be the most unusual phones on this list. ...Samsung Galaxy S10 Plus. The Samsung Galaxy S10 Plus is a phone to beat,and it also has dual front-facing cameras. ...Samsung Galaxy Fold. ...LG V40 ThinQ. ...Asus Zenfone 6. ...Redmi Note 6 Pro. ...

What is smartphone really has the best camera?

The best camera phones you can buy todayiPhone 13 Pro Max. Front camera: 12MP (f/2.2) The biggest iPhone 13 is also the best camera phone you can buy. ...iPhone 13 Pro. Front camera: 12MP (f/2.2) Nipping at the heels of its bigger brother,the iPhone 13 Pro is a very close second on this list of the ...Pixel 6 Pro. ...Samsung Galaxy S22 Ultra. ...Google Pixel 6. ...Google Pixel 5a. ...iPhone 13. ...More items...

Are smartphone cameras as good as normal cameras?

The technological advances that have been made by smartphone makers have many people wondering if their smartphone is as good as a dedicated camera like a DSLR. Serious photographers know that it’s not. However, for an increasing number of people, the quality that you get from a smartphone camera is good enough.

How to choose the best smartphone camera?

Camera phones allow people to take pictures on the go. When selecting the best camera phone, choose the features you want the most. Basic camera phones have a relatively low screen resolution, and often do not feature a flash. More expensive versions might have the option of a flash or a larger screen resolution, which will be helpful if you ...

Do I Need a Dual Camera Phone?

Even if you aren't a pro, you can benefit from the different features a dual camera phone delivers. However, as phones like Google's Pixel line have shown , you don't need two cameras in order to take and share excellent photos.

What is the advantage of a telephoto lens?

First, it allows for better quality zoom (or close-up) functions, often with a 2x optical zoom, which means close-up photos look crisp and clean. A telephoto lens also gives you depth of field which, like a depth sensor, allows you to achieve a nice bokeh effect ...

What is a wide angle camera?

Camera with a wide-angle lens: A wide-angle lens camera snaps photos that are much wider than usual. You may have seen wide-angle landscape shots that a normal smartphone camera could never take. A dual-camera phone can increase the angle of focus to get much more of the scenery around you.

Why are dual camera phones not interchangeable?

Dual-camera phones aren't interchangeable because these cameras are built to execute different but specific tasks. Camera with a depth sensor: The depth sensor is what allows you to take high-quality bokeh (softly blurred background) or portrait-mode photos. The sensor detects the depth of a photo and then blurs what it considers to be ...

What does monochrome photography do?

It increases to the clarity of photos taken using monochrome (black and white) features, offers additional zoom capabilities or helps to capture wide-angle photos, or in some cases, one camera is used to take the photo while the other is focused on capturing the depth of field.

Why do phones have two cameras?

Dual-camera phones use two cameras at the same time to deliver a different sort of photo. There is a primary and secondary camera. The primary camera does the brunt of the image capturing work; it takes pictures much as you would expect. It's the secondary camera that adds specific features.

Do dual camera phones have a camera on the back?

With them, you can achieve bokeh, wide-lens shots, and even 3D photos from your phone. Most dual-camera phones only have two cameras on the back of your phone. However, a few models do include a second lens on the front of your phone, for taking wide-angle selfies.

What is monochrome camera?

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.

What is a dedicated depth sensor?

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.

What is the camera on LG G5?

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 G5’s example, the phone had a 16 megapixel, 29mm equivalent f1.8 primary camera and 8 megapixel, 12mm equivalent f2.4 secondary camera.

How does Huawei P9 work?

Huawei P9. Every time you take a picture, the camera system combines the output of both cameras by layering them into one image. In theory, the two images combined will have greater detail and reduced noise.

How does a second camera work?

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.

What is a wide angle lens?

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.

Why do we see in 3D?

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.

How much zoom does a Samsung Galaxy Note 8 have?

Of course, unlike expensive DSLRs, the optical zoom on these smartphones is often quite limited. You’ll find that most dual lens cameras max out at 2x optical zoom, including the Samsung Galaxy Note 8 and the Apple iPhone 8 Plus.

What is optical zoom?

The optical zoom dual lens camera. Alongside a standard camera lens, some smartphones offer a second ‘optical zoom’ lens which can get a closer view of a far-away subject, without impacting the quality of your photos. Pretty much every smartphone camera has a digital zoom feature, usually activated with a pinch of your fingers on the screen.

What is the purpose of dual lens camera?

These three-dimensional photographs were created by combining the separate images from the left and right lenses, to offer a true depth-of-field – in the same way that your brain uses the images from your left and right eyeballs to allow you to judge distances.

How does a camera zoom work?

Pretty much every smartphone camera has a digital zoom feature, usually activated with a pinch of your fingers on the screen. However, a digital zoom simply crops the edges of your photo and increases the pixel size , to simulate an optical zoom.

What is a wide angle lens?

Wide-angle lenses are the ideal way to shoot a stunning landscape, or a large monument that wouldn’t otherwise fit into a standard mobile photo. The likes of the Asus Zenfone 4 offer a 120-degree view, so you can see almost as much in your photos as you could in real life.

What happens when you zoom in on a picture?

When you use a digital zoom, those pixels are increased in size to magnify the photo. This unfortunately means that your images will be more grainy, with individual pixels likely visible to the naked eye.

When did the first dual lens camera come out?

The first dual lens mobile camera that we personally tested was the HTC Evo 3D, launched way back in 2011. However, this was a very different beast to the typical double shooters that we see today.

Why are dual camera apps so popular?

Dual camera apps have become super popular not only for the novel features they add, like silly filters and optical zoom capabilities but because they can take advantage of the multiple camera lenses your smartphone comes with .

What is a depth sensor camera?

Depth sensor camera. Phones with a depth sensor camera will allow users to take high-quality photos with a bokeh effect (blurred background) or portrait-mode photos. The sensor will identify the depth of a photo and blur the background.

Why do we need a second camera?

The second camera works to add more elements that the main sensor can’t do on its own. It can offer additional zoom power, boost the clarity of photos, and help capture wide-angle photos. Sometimes you’ll have one camera used for taking the photo while the second captures the depth of field.

Why is a wide angle camera so popular?

A camera with a wide-angle lens is popular due to its ability to capture a wider-than-usual photo, like a landscape shot. A perk of a dual-camera phone is that it increases the focus angle to capture more of the surrounding scenery. Monochrome sensor camera.

Why is a camera important?

Whether you’re a professional photographer, hobbyist, or just someone who likes to take great photos, a camera or dual-cameras allows us the ability to capture precious memories and have fun being creative when snapping photos.

What are the features of a smartphone?

The most important features for consumers are battery life, storage, durability, and, of course, camera quality. Once you’re ready to show off your app’s features, check out this video on how to create ...

When did dual camera phones come out?

Having a dual camera isn’t quite new technology. It first arrived in the US back in 2011 in the HTC Evo 3D smartphone and was primarily used to capture 3D images for the phone’s 3D screen.

What is the iPhone X?

In addition to its vertically stacked rear cameras, the 5.8-inch device has ultraslim bezels, an OLED display and Face ID. Its dual camera includes a "telephoto" lens that lets you zoom without degrading quality.

How much does the Asus Zenfone 5 cost?

Along with the slightly pricier ZenFone 5Z, the phones feature a 3,300-mAh battery with quick charging and a dual camera with a standard and wide-angle view. $549 at Amazon. Read More.

How much does the OnePlus 6 cost?

But its main (16-megapixel) camera sensor is now 19 percent larger and it has optical image stabilization -- a feature OnePlus fans have been long requesting. $190 at Amazon.

How many cameras does the Huawei P20 Pro have?

Huawei P20 Pro. As the only exception in this gallery, the P20 Pro actually has three cameras on the back. It has an astonishing 40-megapixel sensor (this is your main color camera) as well as a 20-megapixel sensor that shoots only in black and white but adds detail to shots.

How much does a Cat S61 cost?

Not only is does it have a built-in thermal imaging camera so you can visualize temperatures with some trippy pictures, it packs an air quality sensor and a laser-assisted measuring tool as well. $549 at Amazon.

What is the LG G7 ThinQ?

LG G7 ThinQ. Like the V35 ThinQ, LG's latest G7 features a wide-angle camera with some AI tricks up its sleeve. The camera can give your photos an extra boost before you snap them, and it automatically optimizes your camera settings when it recognizes certain objects and environments. $280 at Amazon.

How many megapixels does the R11 have?

Featuring a 5.5-inch display, a generous 20-megapixel selfie camera on the front and Android Nougat, the R11 from 2017 packed a lot of hardware. Its two cameras on the back included a 20-megapixel and a 16-megapixel lens, with 2X optical zoom.

How many cameras does the Note 9 have?

The Samsung Galaxy Note 9 has two cameras on the back — the exact same set of dual 12MP sensors as the older Galaxy S9 Plus, including the wide-angle dual-aperture lenses it debuted. Like the one on the S9 Plus, the Note 9’s primary lens can alternate between f/1.5 and f/2.4 for taking better photos in various lighting conditions. The other sensor is a telephoto lens. The cameras can also capture 4K 60fps videos and can be create Samsung’s AR Emojis.

How much does a Moto G7 cost?

Motorola Moto G7. The Moto G7 is another affordable phone with dual cameras, coming in at just $299.99. It sports a 12MP main sensor with a ?/1.8 aperture and a secondary 5MP depth sensor for portrait shots.

How many cameras does the Samsung Galaxy S10 have?

We would have added the Samsung Galaxy S10 to the list, but that one has three cameras. LG’s recent flagship has one standard and one wide-angle lens. The main sensor is a 12MP shooter with an f/1.5 aperture, OIS, and dual-pixel autofocus.

What is the primary lens on the Note 9?

Like the one on the S9 Plus, the Note 9’s primary lens can alternate between f/1.5 and f/2.4 for taking better photos in various lighting conditions. The other sensor is a telephoto lens. The cameras can also capture 4K 60fps videos and can be create Samsung’s AR Emojis.

How much RAM does the Note 9 have?

The Galaxy Note 9 is one of the most powerful smartphones around, with the latest and greatest Snapdragon 845 or Exynos 9810 chipset under the hood (depending on the region) and 6GB or 8GB of RAM. The handset is equipped with a large 6.4-inch curved display, packs a big 4,000mAh battery, and is IP68 rated.

How much does the Honor View 20 cost?

The Honor View 20 is a high-end smartphone on a budget. It comes with great specs and costs only $499 from amazon. The dual camera setup features a 48MP, f/1.8 aperture shooter and a ToF camera.

Where does Mitja Rutnik live?

Mitja has more than a decade of experience in the industry and has written for various publications in North America and Europe. He lives in Slovenia, loves sports , and is a self-proclaimed pizza expert. ? May 12, 2019. https://www.androidauthority.com/best-phones-with-dual-cameras-855083/.

What is the camera on Google Pixel 3?

The Google Pixel 3 and Pixel 3 XL may be the most unusual phones on this list. While more smartphones are adding camera sensors on the back, the Pixel 3 and Pixel 3 XL stick with a single rear 12.2MP camera. Instead, the company decided to put two 8MP sensors on the front of each phone. One of them is a standard camera with an f/1.8 aperture and a 75-degree field of view. The other has a wide-angle lens with an f/2.2 aperture and a 97-degree field of view.

How many cameras does the LG V40 ThinQ have?

It has three rear camera sensors and two front-facing cameras.

What is group selfie mode?

Group Selfie mode has received the most attention. It lets owners access the wide-angle sensor so they can bring in more people into their selfie pictures. The other camera feature using the front-facing cameras is Photobooth Mode, which senses when you are smiling and automatically takes a picture.

What is the camera size of the Samsung Galaxy S10 Plus?

The main one sports a 10MP sensor, Dual Pixel Autofocus, a 1.22μm pixel size , and an f/1.9 aperture. The second camera has an 8MP depth sensor with a 1.12μm pixel size and an f/2.2 aperture.

How much does the Zenfone 6 cost?

These are specs you typically find in very expensive high-end devices, but this handset gives them to you at just $649 from Amazon (for the specced out version).

How much is the Redmi Note 6 Pro?

Redmi Note 6 Pro. Those looking to get dual front cameras on the cheap can’t do much better than the Redmi Note 6 Pro at just $165.67 from Amazon. It doesn’t come with the same specs the rest of the phones in this list enjoy, but the device is still plenty powerful.

Does LG V40 ThinQ have bokeh?

The dual front cameras can also take excellent portrait mode images with bokeh background blurring effects. While the LG V40 ThinQ concentrates its camera efforts on its three rear sensors, the two front-facing cameras do a good job for people who want to put in some extra efforts in their selfie shots as well.

What is portrait photography?

Introduced by HTC ( HTC M8 ), perfected by Huawei ( Huawei P9) and followed by Apple ( iPhone 7+ ), portrait photography refers mainly to the ability to take photos with a nice background blur (called Bokeh , from a Japanese term). The blur makes the photo subject “pop” and brings to focus to it, making for nice photo art. The photo below shows how the iPhone 7+ dual-lens produces better bokeh than the single-lens Galaxy S7.

Why does Bokeh have odd things?

Finally, note that every software variants of Bokeh will have some odd things happen at the edges because there isn’t as much information as with a large camera, sensor, and lens. How odd things get will depend on the methods used to generate the depth map, and the blur itself.

Why are pixels blurred on mobile phones?

Mobile phones have lenses and sensors that are too small for this to happen naturally (in the analog space). Therefore, a software emulation process is devised: as pixels are located farther away from the focus area or focus plane, they are blurred artificially using one of the many blur algorithms commonly used in image processing.

How many cameras can light camera capture?

The Light Camera has shown that by combining and processing data from 16 (!!) mobile cameras, it is possible to capture amazing photos ( see their gallery ).

How to know how far each pixel is from the focus area?

To know how far each pixel is from that focus area, it is best and faster to do it with two photos taken with a ~1cm separation. Because of the fixed separation length and the ability to snap both views at the same time (avoiding motion noise), it is possible to triangulate the depth of every pixel in the photo (using a multi-view stereo algorithm ). From there, it is easy to have an excellent estimation of the position of each pixel, relative to the focus area.

Why is there a separate photo mode?

The downside of having a separate “photo mode” is that it adds just enough user-interface friction that the feature is not used very often. Ideally, the switch between cameras should be done automatically, but it is very difficult for the camera to “know” what the user intent is.

How many LG cameras have wide angle?

According to LG, 50% of its dual-lens cameras users have the wide-angle as their primary camera. It is a huge number, which probably dwarves the usage rate of Portrait mode.