Apple recently released the official version of iOS 10.1. The biggest highlight is the addition of a “portrait” camera function to the iPhone 7 Plus, which can achieve a background blurring effect similar to that of a SLR camera. So, how to shoot background blur on iPhone7 Plus? The following "Anxia" introduces in detail the method and experience of taking photos with the blur effect of Apple 7 Plus. How to take pictures with background blur on iPhone7 Plus? First of all, this "portrait" background blur is only suitable for iPhone7 Plus dual-camera smartphones. iPhone7 and below non-dual-camera smartphones do not support this feature. In addition, the system must be upgraded to iOS 10.1 or above. If these two conditions are met, you can experience portrait background blur photography on iPhone7 Plus. Comparison of iPhone7 Plus normal photos and background blur samples after turning on portrait mode. After iPhone7 Plus upgrades to iOS 10.1 or above, open the camera, and on the photo mode at the bottom, you can switch to "portrait" mode, and then take photos to achieve background blur. The effect is as shown in the figure below. After taking photos in the "Portrait" mode, the sample effect has a background blurring effect, bringing an experience similar to that of a SLR camera. This is still very good. Here are the background blurred portrait samples. The iPhone7 Plus background blur shooting sample article finally talks about the iPhone7 Plus virtual shooting experience. Friends who are interested may wish to know more. iPhone7 Plus background blur photography experience. In fact, many of the flagship phones of mainstream manufacturers are equipped with dual cameras. There are not a few like Apple that use a combination of two "long and short focus" lenses with different focal lengths. But the question is why the iPhone 7 Plus Can your photography have a unique effect? According to the physical characteristics of the iPhone 7 Plus, the telephoto lens of the iPhone 7 Plus has an equivalent focal length of 56mm and an aperture of f2.8. Such a lens, compared to the 28mm wide-angle end, is inherently capable of blurring the background to a certain extent. Although the f2.8 aperture is not as large as the f1.8 of the wide-angle lens, it can definitely be considered a large aperture if placed in a SLR lens. Therefore, with such a lens, even if you do not turn on the "portrait" function, it can still achieve A relatively good background blur effect, but you need to manually zoom to 2X state when shooting, and deliberately separate the foreground and background to get a photo with a blurred background, which means a little bit of shooting skills are required. This upgrade of the "Portrait" function makes everything more "foolish". Just enter this mode and the 2X telephoto mode will be automatically turned on. If your distance is not ideal enough, the phone will also prompt you. "Move further away" or "place the subject within 2.5 meters", in terms of user experience, Apple still shows its usual skills. I carefully analyzed the photos taken in the "Portrait" mode. Needless to say, the subject of the figure is clear, and the edges are also very sharp. If a processing method like "Gaussian Blur" is used, the edges will also be "eaten". , and Apple’s algorithm uses PS terminology as “edge cutout is very accurate”. The most pleasing thing is the blur level of the background. It’s not so blurry that you can’t see anything clearly, but it’s also so soft that you feel it can set off the subject well and accentuate the atmosphere. For a For photos taken with mobile phones, it is difficult to achieve this effect if you rely solely on lens quality, so this is where Apple’s ISP algorithm is so powerful. In the same scene, you can use a SLR to compare with the iPhone 7 Plus. If the lens quality of the SLR is slightly better and the focal length is longer, you can take photos with a blurred background, but you need to control the aperture of the SLR not to be too small. , and at the same time, you must ensure that the subject is in clear focus, so that you can get an ideal bokeh photo. In other words, the "portrait" function of iPhone 7 Plus has reached the "quasi-SLR" level, and even operates Even simpler. Why do we say "quasi-SLR" level? Because for some users who are pursuing it, the effect of bokeh has reached a demanding level. What they pursue is "off-focus bilinearity", which extremely tests the shape of the lens aperture. The artistic conception of imaging is difficult to simulate using algorithms. Talking back to the ISP algorithm of iPhone 7 Plus, in fact, the ability of the algorithm was demonstrated during the previous 1X and 2X switching. The original action of switching between the two lenses, under the action of the algorithm, you don’t feel at all. It appears that two lenses are cooperating. When you drag the zoom ring, it seems to be the operation of one lens, and the chromatic aberration and resolution of the two lenses are also controlled almost exactly the same, so that you cannot tell that they are two different lenses. The photos taken, so the algorithm of iPhone 7 Plus can really give full marks.

I also tried using iPhone 7 Plus to take photos other than portraits. In fact, the effect of background blur can also be obtained. What is more interesting is that if you take a photo with a "progressive" depth of field, you will find that starting from the subject The background is blurred in sequence, but the transition of this blur is very fast. It is not a gradual blur, but from the subject back, it almost reaches a blur effect that is inseparable from the background in one step. This shows that the iPhone 7 Plus The ISP algorithm is very good at separating the subject and the background, but the scenery between the subject and the background has not yet been fully transitioned. This may be an area that needs further optimization, and it is also a difficulty in taking pictures with a mobile phone.