{"id":10141,"date":"2018-10-23T21:52:03","date_gmt":"2018-10-23T21:52:03","guid":{"rendered":"https:\/\/igotoffer.com\/blog\/?p=10141"},"modified":"2023-11-16T04:17:13","modified_gmt":"2023-11-16T04:17:13","slug":"smartphone-several-cameras","status":"publish","type":"post","link":"https:\/\/igotoffer.com\/blog\/smartphone-several-cameras","title":{"rendered":"Several Cameras: Why Does a Smartphone Need Them?"},"content":{"rendered":"<h2><span id=\"Dual-camera_tech_explained_Are_two_better_than_one_Video\">Dual-camera tech explained: Are two better than one? [Video]<\/span><\/h2>\n<div class=\"ytb\">\n<p style=\"text-align: center;\"><iframe title=\"Dual-camera tech explained: Are two better than one?\" width=\"620\" height=\"349\" src=\"https:\/\/www.youtube.com\/embed\/f1xt1HQ_Hkk?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" allowfullscreen><\/iframe><\/p>\n<\/div>\n<p style=\"text-align: center;\">Video uploaded by <a class=\"yt-simple-endpoint style-scope yt-formatted-string\" href=\"https:\/\/www.youtube.com\/@techradar\" target=\"_blank\" rel=\"noopener\">TechRadar<\/a> on <strong class=\"watch-time-text\">October 11, 2017<\/strong><\/p>\n<h2><span id=\"Why_does_a_smartphone_need_several_cameras\">Why does a smartphone need several cameras?<\/span><\/h2>\n<div id=\"toc_container\" class=\"no_bullets\"><p class=\"toc_title\">Contents<\/p><ul class=\"toc_list\"><li><a href=\"#Dual-camera_tech_explained_Are_two_better_than_one_Video\"><span class=\"toc_number toc_depth_1\">1<\/span> Dual-camera tech explained: Are two better than one? [Video]<\/a><\/li><li><a href=\"#Why_does_a_smartphone_need_several_cameras\"><span class=\"toc_number toc_depth_1\">2<\/span> Why does a smartphone need several cameras?<\/a><ul><li><a href=\"#First_of_all_it8217s_cheap\"><span class=\"toc_number toc_depth_2\">2.1<\/span> First of all, it&#8217;s cheap<\/a><\/li><li><a href=\"#Final_victory_over_point-and-shoot_cameras\"><span class=\"toc_number toc_depth_2\">2.2<\/span> Final victory over point-and-shoot cameras<\/a><\/li><li><a href=\"#More_cameras\"><span class=\"toc_number toc_depth_2\">2.3<\/span> More cameras<\/a><\/li><li><a href=\"#Selfie\"><span class=\"toc_number toc_depth_2\">2.4<\/span> Selfie<\/a><\/li><\/ul><\/li><li><a href=\"#Links\"><span class=\"toc_number toc_depth_1\">3<\/span> Links<\/a><\/li><\/ul><\/div>\n\n<p>Smartphones with two rear cameras do not surprise anyone anymore. The main module is supplemented with a wide-angle (as in the LG V30 or ASUS Zenfone 5) or with a double zoom (iPhone X, Samsung Galaxy S9+). The second option is the most popular.<\/p>\n<p>High-quality cameras are universal thanks to interchangeable lenses, movable optics, and large sizes of matrices and lenses. These are not installed in the smartphone, because space for it is small, and dimensions are very limited. Therefore, it is necessary to go through an extensive path of development, not to increase the cameras, but their number.<\/p>\n<p>There are photos of smartphones online with three or even five cameras. A lot of people joke around and say \u201cyou might as well create a smartphone with ten cameras!\u201d You can joke all you want, but this is literally our future. When they do add 10 cameras to a phone\u2026 they won\u2019t be wrong for doing so either.<\/p>\n<h3><span id=\"First_of_all_it8217s_cheap\">First of all, it&#8217;s cheap<\/span><\/h3>\n<div id=\"attachment_10172\" style=\"width: 660px\" class=\"wp-caption aligncenter\"><img aria-describedby=\"caption-attachment-10172\" loading=\"lazy\" class=\"size-full wp-image-10172\" src=\"https:\/\/igotoffer.com\/blog\/wp-content\/uploads\/2018\/10\/why-smartphone-need-several-cameras-nokia-6680.jpg\" alt=\"Nokia 6680 (2005), the first Nokia smartphone with a front-facing camera\" width=\"650\" height=\"860\" srcset=\"https:\/\/igotoffer.com\/blog\/wp-content\/uploads\/2018\/10\/why-smartphone-need-several-cameras-nokia-6680.jpg 650w, https:\/\/igotoffer.com\/blog\/wp-content\/uploads\/2018\/10\/why-smartphone-need-several-cameras-nokia-6680-227x300.jpg 227w, https:\/\/igotoffer.com\/blog\/wp-content\/uploads\/2018\/10\/why-smartphone-need-several-cameras-nokia-6680-620x820.jpg 620w, https:\/\/igotoffer.com\/blog\/wp-content\/uploads\/2018\/10\/why-smartphone-need-several-cameras-nokia-6680-113x150.jpg 113w, https:\/\/igotoffer.com\/blog\/wp-content\/uploads\/2018\/10\/why-smartphone-need-several-cameras-nokia-6680-600x794.jpg 600w, https:\/\/igotoffer.com\/blog\/wp-content\/uploads\/2018\/10\/why-smartphone-need-several-cameras-nokia-6680-227x300@2x.jpg 454w, https:\/\/igotoffer.com\/blog\/wp-content\/uploads\/2018\/10\/why-smartphone-need-several-cameras-nokia-6680-113x150@2x.jpg 226w\" sizes=\"(max-width: 650px) 100vw, 650px\" \/><p id=\"caption-attachment-10172\" class=\"wp-caption-text\">Nokia 6680 (2005), the first Nokia smartphone with a front-facing camera<\/p><\/div>\n<p>It\u2019s important to note that the number of cameras is not limited. A lot of time has passed since when the camera was considered the most expensive part of a smartphone. There was a time when camera phones were strictly expensive flagships, that is not the case anymore. Today, a camera is quite common and a fairly cheap component, even if we are talking about a high-quality module.<\/p>\n<h3><span id=\"Final_victory_over_point-and-shoot_cameras\">Final victory over point-and-shoot cameras<\/span><\/h3>\n<p>Let\u2019s compare smartphones with conventional digital point-and-shoot cameras. Yes, we are aware that almost no one buys these cameras anymore, and this is solely because of smartphones. The quality of shooting on a mobile phone today is not worse, or even better than that of point-and-shoot cameras. At the same time, the phone is considered a necessary gadget, and the camera comes as an addition.<\/p>\n<div id=\"attachment_10173\" style=\"width: 660px\" class=\"wp-caption aligncenter\"><img aria-describedby=\"caption-attachment-10173\" loading=\"lazy\" class=\"size-full wp-image-10173\" src=\"https:\/\/igotoffer.com\/blog\/wp-content\/uploads\/2018\/10\/why-smartphone-need-several-cameras-zoom-iphone.png\" alt=\"Optical Zoom Telescope Camera Lens with Tripod for iPhone\" width=\"650\" height=\"550\" srcset=\"https:\/\/igotoffer.com\/blog\/wp-content\/uploads\/2018\/10\/why-smartphone-need-several-cameras-zoom-iphone.png 650w, https:\/\/igotoffer.com\/blog\/wp-content\/uploads\/2018\/10\/why-smartphone-need-several-cameras-zoom-iphone-300x254.png 300w, https:\/\/igotoffer.com\/blog\/wp-content\/uploads\/2018\/10\/why-smartphone-need-several-cameras-zoom-iphone-620x525.png 620w, https:\/\/igotoffer.com\/blog\/wp-content\/uploads\/2018\/10\/why-smartphone-need-several-cameras-zoom-iphone-177x150.png 177w, https:\/\/igotoffer.com\/blog\/wp-content\/uploads\/2018\/10\/why-smartphone-need-several-cameras-zoom-iphone-600x508.png 600w, https:\/\/igotoffer.com\/blog\/wp-content\/uploads\/2018\/10\/why-smartphone-need-several-cameras-zoom-iphone-177x150@2x.png 354w\" sizes=\"(max-width: 650px) 100vw, 650px\" \/><p id=\"caption-attachment-10173\" class=\"wp-caption-text\">Optical Zoom Telescope Camera Lens with Tripod for iPhone<\/p><\/div>\n<p>But there was always one detail in which point-and-shoot cameras were better than smartphones\u2026 optical zoom. Yes, a wide-angle lens, typical for smartphones, is enough in most cases, but not so much for portraits. Sometimes you do need to zoom into an image, so what is one to do?<\/p>\n<p>At different times, phone manufacturers have tried different methods. For example, they have tried using digital zoom, in which the picture is cropped in the center, and then stretched to the original resolution using various ingenious algorithms. There were also attempts to embed bulky optics into smartphones. Or even clip-on lenses for mobile phones.<\/p>\n<p>However, all these methods cannot be considered as an adequate solution to the problem. Digital zoom spoils the image anyway. Even if neural networks learn to adequately increase the resolution of an image, full-sized images will still look better. That is, the same neural networks can process high-quality photos into even higher quality ones and increase their sharpness to the level of an expensive lens on a full-frame professional camera.<\/p>\n<p>Optical zoom in a smartphone is undesirable because of its size. That is, either you need to make the smartphone significantly thicker (or so that the lens noticeably protrudes, like on the Galaxy Camera), or the quality of the optical system will be low.<\/p>\n<p>However, clip-on lenses remain the worst quality of all. <strong><em>First of all<\/em><\/strong>, the optical schemes of smartphones do not initially provide for something else to be attached on the outside. <em><strong>Second of all<\/strong><\/em>, a decent lens should be expensive, but who will then actually purchase it? Third of all, clip-on lenses kill the whole essence of mobilography. With the constant fuss of attaching and detaching, they make smartphones huge and inconvenient to use. The result is that the quality of images is extremely low (sharpness, color rendition, geometry will deteriorate, as well as chromatic aberrations and vignetting appearance). Therefore, there is no sense in snapshots, and it&#8217;s easier to just take a camera.<\/p>\n<h3><span id=\"More_cameras\">More cameras<\/span><\/h3>\n<p>There is honestly only one way out\u2026 simple yet smart. It is necessary to make a smartphone with several cameras, and the lens of each camera will have its own purpose and focal length. But what should the length be?<\/p>\n<p>For example, the popular iPhone 7 Plus. It has an ordinary wide-angle camera, and there is also a second camera, the focal length of which is approximately twice as large. It ends up being like a portrait lens.<\/p>\n<div id=\"attachment_10174\" style=\"width: 660px\" class=\"wp-caption aligncenter\"><img aria-describedby=\"caption-attachment-10174\" loading=\"lazy\" class=\"size-full wp-image-10174\" src=\"https:\/\/igotoffer.com\/blog\/wp-content\/uploads\/2018\/10\/why-smartphone-need-several-blur.jpg\" alt=\"Blur with dual camera in the iPhone 7 Plus\" width=\"650\" height=\"380\" srcset=\"https:\/\/igotoffer.com\/blog\/wp-content\/uploads\/2018\/10\/why-smartphone-need-several-blur.jpg 650w, https:\/\/igotoffer.com\/blog\/wp-content\/uploads\/2018\/10\/why-smartphone-need-several-blur-300x175.jpg 300w, https:\/\/igotoffer.com\/blog\/wp-content\/uploads\/2018\/10\/why-smartphone-need-several-blur-620x362.jpg 620w, https:\/\/igotoffer.com\/blog\/wp-content\/uploads\/2018\/10\/why-smartphone-need-several-blur-250x146.jpg 250w, https:\/\/igotoffer.com\/blog\/wp-content\/uploads\/2018\/10\/why-smartphone-need-several-blur-600x351.jpg 600w, https:\/\/igotoffer.com\/blog\/wp-content\/uploads\/2018\/10\/why-smartphone-need-several-blur-250x146@2x.jpg 500w\" sizes=\"(max-width: 650px) 100vw, 650px\" \/><p id=\"caption-attachment-10174\" class=\"wp-caption-text\">Blur with dual camera in the iPhone 7 Plus<\/p><\/div>\n<p>The LG G5 also has two cameras, but the secondary camera has an even wider angle (for ultra wide-angle shots) And you\u2019re able to get some pretty cool pictures with it!<\/p>\n<p>The issue is that the LG G5 lacks a portrait lens, and the iPhone lacks a wide-angle lens. So what solution can we come up for this? Creating phones with 3 cameras!<\/p>\n<div id=\"attachment_10175\" style=\"width: 660px\" class=\"wp-caption aligncenter\"><img aria-describedby=\"caption-attachment-10175\" loading=\"lazy\" class=\"wp-image-10175 size-full\" title=\"This is the photo from the standard camera\" src=\"https:\/\/igotoffer.com\/blog\/wp-content\/uploads\/2018\/10\/why-smartphone-need-several-standart.jpg\" alt=\"This is the photo from the standard camera\" width=\"650\" height=\"600\" srcset=\"https:\/\/igotoffer.com\/blog\/wp-content\/uploads\/2018\/10\/why-smartphone-need-several-standart.jpg 650w, https:\/\/igotoffer.com\/blog\/wp-content\/uploads\/2018\/10\/why-smartphone-need-several-standart-300x277.jpg 300w, https:\/\/igotoffer.com\/blog\/wp-content\/uploads\/2018\/10\/why-smartphone-need-several-standart-620x572.jpg 620w, https:\/\/igotoffer.com\/blog\/wp-content\/uploads\/2018\/10\/why-smartphone-need-several-standart-163x150.jpg 163w, https:\/\/igotoffer.com\/blog\/wp-content\/uploads\/2018\/10\/why-smartphone-need-several-standart-600x554.jpg 600w, https:\/\/igotoffer.com\/blog\/wp-content\/uploads\/2018\/10\/why-smartphone-need-several-standart-163x150@2x.jpg 326w\" sizes=\"(max-width: 650px) 100vw, 650px\" \/><p id=\"caption-attachment-10175\" class=\"wp-caption-text\">This is the photo from the standard camera<\/p><\/div>\n<p>Let\u2019s talk about macro photography now. Not just taking pictures up close but real macro photography! Having four cameras would help achieve this. Let\u2019s say you then need a telephoto lens with a larger focal length\u2026 in that case you need five cameras.<\/p>\n<div id=\"attachment_10176\" style=\"width: 660px\" class=\"wp-caption aligncenter\"><img aria-describedby=\"caption-attachment-10176\" loading=\"lazy\" class=\"size-full wp-image-10176\" src=\"https:\/\/igotoffer.com\/blog\/wp-content\/uploads\/2018\/10\/why-smartphone-need-several-zoom.jpg\" alt=\"The example of a photos with short, medium and long zoom\" width=\"650\" height=\"260\" srcset=\"https:\/\/igotoffer.com\/blog\/wp-content\/uploads\/2018\/10\/why-smartphone-need-several-zoom.jpg 650w, https:\/\/igotoffer.com\/blog\/wp-content\/uploads\/2018\/10\/why-smartphone-need-several-zoom-300x120.jpg 300w, https:\/\/igotoffer.com\/blog\/wp-content\/uploads\/2018\/10\/why-smartphone-need-several-zoom-620x248.jpg 620w, https:\/\/igotoffer.com\/blog\/wp-content\/uploads\/2018\/10\/why-smartphone-need-several-zoom-250x100.jpg 250w, https:\/\/igotoffer.com\/blog\/wp-content\/uploads\/2018\/10\/why-smartphone-need-several-zoom-600x240.jpg 600w, https:\/\/igotoffer.com\/blog\/wp-content\/uploads\/2018\/10\/why-smartphone-need-several-zoom-250x100@2x.jpg 500w\" sizes=\"(max-width: 650px) 100vw, 650px\" \/><p id=\"caption-attachment-10176\" class=\"wp-caption-text\">The example of a photos with short, medium and long zoom<\/p><\/div>\n<p>However, different focal lengths are not the only reason for the emergence of several modules. Dimensions of smartphones impose restrictions not only on the mechanics inside (necessary for zoom), but also on the physical size of the sensor (matrix). The smaller the sensor, the less light it receives. This means that pictures with poor lighting will also be of poor quality. At the same time, smartphones today require ideal shots at night, whereas even for professional equipment a few years ago it was a laborious process (with a tripod and a long exposure). But with smartphones, everything needs to be much easier.<\/p>\n<p>What if several cameras interact with each other, eliminating excess noise? For example, let&#8217;s make one black-and-white camera. Just like eye rod cells, it will catch the light better, but not the color, but the other camera will make sure to catch the color. Combining images from both cameras, we get a color photograph with higher sharpness and with minimum noise.<\/p>\n<p>Where else can multiple cameras be used? For instance, to increase a photo&#8217;s resolution (number of points), or to create a high-end color reproduction with short exposure in HDR (for a clear photo), and also for 3D graphics. The latter, by the way, can be used not only in 3D games, with which everyone has played enough of and forgotten (at first, double cameras appeared to just to create 3D images), but to separate the background from the object with subsequent blurring. Also, several cameras will be helpful for object recognition, or for the needs of augmented reality (AR). In a nutshell, there are many uses.<\/p>\n<div id=\"attachment_10177\" style=\"width: 660px\" class=\"wp-caption aligncenter\"><img aria-describedby=\"caption-attachment-10177\" loading=\"lazy\" class=\"size-full wp-image-10177\" src=\"https:\/\/igotoffer.com\/blog\/wp-content\/uploads\/2018\/10\/why-smartphone-need-several-samsung-a9.png\" alt=\"Four cameras in the Samsung Galaxy A9 (2018)\" width=\"650\" height=\"400\" srcset=\"https:\/\/igotoffer.com\/blog\/wp-content\/uploads\/2018\/10\/why-smartphone-need-several-samsung-a9.png 650w, https:\/\/igotoffer.com\/blog\/wp-content\/uploads\/2018\/10\/why-smartphone-need-several-samsung-a9-300x185.png 300w, https:\/\/igotoffer.com\/blog\/wp-content\/uploads\/2018\/10\/why-smartphone-need-several-samsung-a9-620x382.png 620w, https:\/\/igotoffer.com\/blog\/wp-content\/uploads\/2018\/10\/why-smartphone-need-several-samsung-a9-244x150.png 244w, https:\/\/igotoffer.com\/blog\/wp-content\/uploads\/2018\/10\/why-smartphone-need-several-samsung-a9-600x369.png 600w, https:\/\/igotoffer.com\/blog\/wp-content\/uploads\/2018\/10\/why-smartphone-need-several-samsung-a9-244x150@2x.png 488w\" sizes=\"(max-width: 650px) 100vw, 650px\" \/><p id=\"caption-attachment-10177\" class=\"wp-caption-text\">Four cameras in the Samsung Galaxy A9 (2018)<\/p><\/div>\n<p>Four cameras in the Samsung Galaxy A9 (2018)<\/p>\n<p>This does not exclude the fact that some manufacturers will make smartphones with multiple cameras just for their number. At the same time, a smartphone with a smaller number of cameras or even with a single (but expensive one) can perform the effects described above with even higher quality than a cheap smartphone with several cameras.<\/p>\n<div id=\"attachment_10178\" style=\"width: 660px\" class=\"wp-caption aligncenter\"><img aria-describedby=\"caption-attachment-10178\" loading=\"lazy\" class=\"size-full wp-image-10178\" src=\"https:\/\/igotoffer.com\/blog\/wp-content\/uploads\/2018\/10\/why-smartphone-need-several-nokia-9.jpg\" alt=\"In the upcoming flagship Nokia 9, we expect 5 rear cameras at once\" width=\"650\" height=\"640\" srcset=\"https:\/\/igotoffer.com\/blog\/wp-content\/uploads\/2018\/10\/why-smartphone-need-several-nokia-9.jpg 650w, https:\/\/igotoffer.com\/blog\/wp-content\/uploads\/2018\/10\/why-smartphone-need-several-nokia-9-300x295.jpg 300w, https:\/\/igotoffer.com\/blog\/wp-content\/uploads\/2018\/10\/why-smartphone-need-several-nokia-9-620x610.jpg 620w, https:\/\/igotoffer.com\/blog\/wp-content\/uploads\/2018\/10\/why-smartphone-need-several-nokia-9-152x150.jpg 152w, https:\/\/igotoffer.com\/blog\/wp-content\/uploads\/2018\/10\/why-smartphone-need-several-nokia-9-600x591.jpg 600w, https:\/\/igotoffer.com\/blog\/wp-content\/uploads\/2018\/10\/why-smartphone-need-several-nokia-9-152x150@2x.jpg 304w\" sizes=\"(max-width: 650px) 100vw, 650px\" \/><p id=\"caption-attachment-10178\" class=\"wp-caption-text\">In the upcoming flagship Nokia 9, we expect 5 rear cameras at once<\/p><\/div>\n<p>As mentioned above, there is no need to worry since the number of cameras does not make a smartphone more expensive. Cameras basically cost nothing when adding them to a phone. The \u201cmagic\u201d that has been happening inside smartphones for a while now is all based on the level of firmware and algorithms.That is why photos by Sony smartphones are worse quality when compared to competitors on the same matrices (also made by Sony, oddly enough). It\u2019s just that Sony\u2019s mobile programmers don\u2019t do well with photo processing. Which is also strange, because Sony cameras are among the best.<\/p>\n<h3><span id=\"Selfie\">Selfie<\/span><\/h3>\n<p>Well, what about the front-facing cameras, you might ask? In this case, a lot of cameras is not needed, two or three will suffice. Two are needed to create a realistic blur. However, it is worth noting that even on professional full-frame cameras, wide-angle lenses do not blur the background very well, since they have more DOF (depth of field). So often all these blurred effects on front-facing cameras like on the iPhone X, don\u2019t exactly look \u201cprofessional\u201d, but more unnatural. In the right hands though, it can definitely work.<\/p>\n<p>In addition, ultra wide-angle lenses can be useful for group selfies. Although it is not very convenient to use it as a permanent camera, as a supplement it will work perfectly. For the needs of face recognition, several cameras on the front panel will become indispensable, but not more than three.<\/p>\n<h2><span id=\"Links\">Links<\/span><\/h2>\n<ul>\n<li><a href=\"https:\/\/www.techradar.com\/news\/smartphones-vs-cameras-do-you-still-need-a-dslr\" target=\"_blank\" rel=\"noopener\">Smartphones vs cameras: do you still need a DSLR?<\/a> &#8211; TechRadar<\/li>\n<li>How to <a href=\"https:\/\/igotoffer.com\/sell-cell-phone\" target=\"_blank\" rel=\"noopener\">sell your old smartphone<\/a> online for top price? &#8211; iGotOffer<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Dual-camera tech explained: Are two better than one? [Video] Video uploaded by TechRadar on October 11, 2017 Why does a smartphone need several cameras? Smartphones with two rear cameras do not surprise anyone anymore. The main module is supplemented with a wide-angle (as in the LG V30 or ASUS Zenfone 5) or with a double [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":10179,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[440],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v19.0 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Several Cameras: Why Does a Smartphone Need Them? | iGotOffer<\/title>\n<meta name=\"description\" content=\"Smartphones with several cameras do not surprise anyone anymore. 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