How does Apple's mobile phone shoot high-quality short videos?

Ordinary people may not have this ability and cost, but at present, the lens of smartphones such as iPhone already supports shooting 4K or 60fps video. Technically speaking, it is not difficult to make a film with "almost" quality.

Open the mobile phone photo album, do you find many random video clips? At some moments, videos are more convincing and live than photos. However, shooting a beautiful video is a more challenging project than taking pictures.

If in the era of automatic photography, photos only need to pay attention to composition, then there are more links in photography: the picture should be stable, that is, the hand should be stable or the anti-shake function of the equipment should be stronger; The picture should be in focus, which means that you may have to walk while shooting, which conflicts with the stability of the picture; The video should have a plot and structure, which means editing after shooting.

If you want to start recording your life with video, here are some tips and help.

The main technical points are similar to taking pictures.

Taking pictures is the same as taking pictures. The basic points are nothing more than horizontal and vertical, normal composition and accurate exposure. If you shoot with a mobile phone, the exposure requires almost no manual intervention, and the camera will automatically adjust the brightness of the picture according to the ambient light.

In terms of composition, photography and video recording are different.

Photography can be taken horizontally or vertically, but for camera shooting, vertical shooting is meaningless unless there is something unexpected: it can't be seen on TV, and there are black edges on both sides of the network.

Generally speaking, photography pays attention to the golden section, and the focus of the picture is mostly on one third of the picture. In camera shooting, in order to highlight the focus of still life and people, we can simply put each other in the middle of the picture, which is called "symmetrical composition".

David fincher stills of House of Cards like this stable and symmetrical composition style.

When shooting moving things, such as cars on the road, be careful not to roll the lens quickly, that is, to "scan" quickly with your mobile phone. Fast scrolling is not recommended. It's not bad-looking, but it's not good-looking in the movie: the CMOS photosensitive original of the mobile phone is an electronic shutter that scans line by line. Whether it is fast shaking or shooting fast moving objects, the picture will be distorted because of the principle.

For example, if you shoot out of the window on the train, you will find that the vertical telephone pole has become crooked; When shooting the rotating propeller, the picture will appear strange conditions such as segmentation and distortion, and so on.

Therefore, in the case of holding the phone steady, the key is to reduce the movement of the picture and slow down the movement of the picture. For moving objects, you can shoot the whole range of motion with a wide angle, such as stepping back a little; Or shoot from another angle, such as standing at the corner of the road to shoot the car facing the future, instead of shaking the lens on the side of the road.

For mobile phones with dual cameras, you can also borrow some photography skills to increase the depth of the picture. For example, on the iPhone, you can use the second telephoto lens to get close to the subject, and then click on the background to shift the focus of the picture to the background. In professional cameras, you can use a large aperture to achieve this shallow depth of field effect, but you can only make do with it on mobile phones.

In addition, for some special subjects, you can try high-speed and low-speed photography. For example, shooting waves can be shot in a mode of 240 frames, and the waves will be solidified when playing; When shooting clouds and the sky, you can use time-lapse photography, and the final effect is to compress the picture for a long time in a short time, which is more timely.