What are the requirements for the video shooting equipment itself? Anti-shake? element
Let's look at some hardware and software elements to eliminate jitter from the video shooting equipment itself.
1, volume and weight of video shooting equipment
Don't underestimate the shape and weight of video shooting equipment, which actually has the most direct impact on anti-shake. Early commercial cameras didn't have any black technology with anti-shake function, but hand-held shooting still has a relatively stable effect, and even zooming to the telephoto end can still be relatively stable, thanks to its shoulder-held design and not too light weight, which laid the foundation for video stability. If you shoot with a device such as a mobile phone, it is difficult to shoot stably with your hands because it is too light and thin, and it is not designed according to the law of video shooting creation. It is normal to shoot video directly with mobile phone, and the picture is unstable.
2. Optical image stabilization and electronic image stabilization
With the continuous lightweight design of camera equipment, in addition to the professional camera equipment in radio and television industry, many civilian equipment are slimming, but the technical content of anti-shake is constantly improving. In business and home cameras, most of the machines in recent years have the function of combining multi-stage optical image stabilization with electronic image stabilization. What is optical image stabilization and electronic image stabilization? In fact, it is easy to understand that optical image stabilization is to fine-tune the lens and cmos of the machine. Through the gyroscope device and software algorithm in the machine, the floating lens or cmos will offset the jitter from the hand and achieve a relatively stable picture effect. Hard anti-shake Electronic anti-shake is to use the outermost circle of the picture as a redundant area through the in-machine software algorithm to reduce the jitter of the corrected picture, and finally achieve a stable effect by cutting off this circle of pictures. Is it a kind of? Soft and anti-shake. If you need to shoot directly by hand, you'd better turn on the anti-shake function of the machine, so that you can shoot a more stable and smooth picture.
3. Auxiliary stabilizing device
If you don't shoot video with your hands, the best way to shoot is to fix the machine on the stabilizer, which includes tripod, monopod, slide rail, rocker arm, tripod stabilizer, mechanical camera stabilizer, vehicle stabilizer and so on. Professional video production, only when deliberately pursuing documentary style will use hand-held shooting, in general, it is necessary to use the necessary auxiliary stabilizing device to shoot. Even if you use a simple mobile phone to shoot, you should try to avoid pure hand holding. The mobile phone can be installed on a small tripod or a small axis stabilizer, and the video stabilization effect will be greatly enhanced.
4. The picture stability of wide-angle and telephoto lenses is different.
When shooting video, the focal length of the lens is also directly related to the stability of the picture. The longer the focal length, the more difficult it is to achieve a relatively stable effect, and the focal length is directly proportional to the difficulty of suppressing jitter. Therefore, if you need to hold a video picture, it is best to use a relatively wide-angle focal segment, so that even if there is a slight jitter, the picture will not be unacceptable. If it is a telephoto segment, the hand-held video picture will be very bad, and you must go to a tripod.