How does the camera used on the rocker arm of variety show focus on mobile shooting? Or a fully automatic focusing lens?

The first is the ultra-light rocker arm, which we call "seesaw" and is called "knife" in photography. Usually 1.5m to 3m. Prices range from 5000 yuan to 30000 yuan. Its characteristic is small and convenient, and it is suitable for shooting in a narrow space. Generally widely used in TV topics. Because this rocker arm has no electronic control facilities, the leg is only 1.5 meters, which can't reach the ideal shooting angle. General customers will not choose to shoot parties and meetings.

The second type is DV rocker arm. The price of this rocker arm ranges from 25,000 yuan to 60,000 yuan, which is higher than the first one. First, there is omni-directional control in electronic control, and the length is also extended to 9 meters. Because the rocker arm can only be equipped with a small DV camera, and the signal index is DV civilian grade, he can often be seen at the wedding scene.

The third type is broadcast-grade rocker arm. This kind of rocker arm is divided into medium and heavy type. They all set up broadcast-level cameras. Medium-sized rocker arm is used indoors, usually 6 to 10 meter in length. Prices range from 120000 to 180000. Because of its light weight, there is little windproof space. Rarely seen in the outfield.

The heavy rocker arm is a large rocker arm of 6 to18m. The price is also 200,000 to 350,000. I used a 6- 15m heavy rocker arm. In June, 2007, 165438+ 10, the Phoenix TV documentary Jianghu was filmed. You can see our work photos on the company website. ) On the luxury cruise ship in changjiang no.1, the rocker arm is facing the wind, the huge weight and the oversized windproof hole from the second season keep the camera motionless, and also ensure the stable picture and broadcast effect.

Anyone with a little common sense knows that it takes very good steel to open a big vent hole in a steel pipe. Otherwise, the consequences at the party will be unimaginable. Shooting with a large windproof hole has two advantages. First, it has the function of ventilation and resistance reduction. Shooting in the outfield will not affect the shooting quality because of the wind. Secondly, the rocker arm with good light transmission effect and few air holes has a blunt shadow passing through the stage when passing the lights at the party site. Especially when you pass a singer, it will block the light and turn the singer's face into a black shadow. And our rocker arm can hardly see the shadow.

Then there is the electric pan/tilt. Generally, the rocker arm can only rotate 360 degrees. Why? Because it is a wired connection to the pan/tilt, the line will break when it exceeds 360 degrees, so our rocker arm can rotate n times. Think about what our Yuntai is connected to, and it is an optical fiber connection. The picture taken by n rotations is more jumping and enjoyable.