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How does DJI UAV work?
First, safe flight: remote-controlled aircraft is different from cameras and sports cameras, with high risk factor, but if you follow the flight rules, the flight safety factor is still very high. So how to ensure flight safety?

1. Especially for beginners, flying in an open place, although you don't need to look up at the plane all the time, you must ensure that the plane is always in the field of vision. Occlusion of tall buildings and vegetation sometimes affects remote control and real-time signals.

2. Sometimes, due to the loss of GPS or remote control signal, the plane will try to return automatically, but the plane can't foresee the surrounding obstacles. At this time, you should use the S 1 switch of the remote controller to retrieve the remote control right urgently.

3. Don't ignore any tips of the APP after starting the camera. It is very important to give tips such as the failure of pan/tilt, the failure of SD card insertion and the correction of compass. It is very easy to cause an accident to take off forcibly without warning.

4. Check regularly. The first is to check the battery life. Press and hold the power supply for five seconds to display the total battery life. Generally speaking, four lights greater than three constants represent normal battery life. When the battery life is reduced, the power supply is sometimes unstable and the plane will fall without warning. The second is to check the condition of the propeller, which is the most easily damaged part of the aircraft. Always check for defects or cracks.

5. Pay attention to laws and regulations related to flight. For example, in the United States, all national parks are forbidden to fly, and many areas also have relevant no-fly regulations. Please get permission or ask before aerial photography.

6. Altitude is very important, and the lift of aircraft is limited, so it is difficult to control the lack of lift at high altitude. Pay attention to the nominal maximum flying height of each model.

Second, flight skills: the role of the three-axis pan-tilt on the DJI aerial camera is to ensure the stability of the camera. No matter how the plane shakes the camera, it always stays in a specific position. So with this Yuntai, we don't have to worry about anything else? The answer is no, there are many skills in flight that can make videos and photos more perfect.

1. It's easier to get a good video clip by flying backwards. When DJI Phantom series is flying, sometimes the propeller will enter the video screen because of the violent shaking of the fuselage. If it is inverted, this problem can be avoided and it is more convenient for the operator to fly at a higher speed. For a professional model like DJI Inspire 1, there is no need to worry about this problem, because the propeller will rise very high after take-off.

2. Facing the sun, when shooting videos and photos, stripes will be formed on videos or photos because the angle of sunlight penetrating the propeller is sometimes just right. The way to avoid this situation is to add a reducing mirror to the camera of the plane.

It is very important to control the flight speed. When shooting a video clip, avoid sudden acceleration and deceleration, so that the video clip will be obviously stuck. Secondly, fly as slowly as possible under permitted conditions. You can adjust the acceleration speed of video clips later, but it is difficult to slow down.

4. In the new Phantom series, due to the improvement of the remote controller, it is not necessary to adjust the camera angle on the mobile phone or tablet, so that the camera angle can be adjusted with the index finger at the same time of remote control. This technology can help control and make cool video clips, or. Similarly, on the more advanced Inspire series, there are even dual remote controls. One person controls the plane and the other controls the camera, which makes it easier to transport the mirror.

Third, shooting skills: although the performance of the camera that comes with the aerial camera is not as good as that of the professional-grade SLR, its image quality and video quality (4K video) still have great potential to be tapped.

1. Try to use RAW format when taking pictures. This principle, like the camera, is to obtain more post-processing space.

Take photos around the scene at 2.360 degrees, or shoot videos around and then capture video screenshots. With the polar coordinate function of Photoshop, can you take the photos you have seen? Asteroids? Effect.

3. Try to keep the lens direction level, avoid the horizon bending, and ensure the natural architectural shooting effect.

4. Adjust the camera angle to the bottom, parallel to the ground. This is an angle that can best reflect the perspective of aerial photography, and shooting from this angle can often find many surprises.

5. Pay attention to correct deformation, because the shooting angle of aerial camera is relatively wide, so pay attention to correct deformation in post-processing. Now there are mainstream image processing software such as Photoshop.

6. Noise treatment. The photosensitive element of the aerial camera is already very good, and the noise reduction in the later stage can make the image quality go up a storey still higher. Generally speaking, in the case of sufficient light, it is only necessary to appropriately reduce the gray noise. However, when the light is weak, such as before and after sunrise and sunset, it is necessary to appropriately reduce the color noise in the picture.

The above is the operation tutorial of DJI UAV.