Traditional Culture Encyclopedia - Photography and portraiture - The color temperature of light rail DJI is inaccurate.

The color temperature of light rail DJI is inaccurate.

1. Sensitivity setting

It is recommended to set manual exposure instead of automatic sensitivity. Such as ISO200 400. It should be judged and set according to the brightness of light, the acceptance threshold of the highest sensitivity noise of the drone and the shutter speed. The reason why the automatic sensitivity cannot be set for aerial photography delay is that the light will change during aerial photography. If the automatic sensitivity is set, the camera will automatically adjust the sensitivity according to the change of light, resulting in flicker and uneven exposure in the time-lapse photography sequence. Such images need to be adjusted one by one in the post-synthesis of time-lapse photography, which will be very troublesome.

2. White balance setting

It is recommended to set manual white balance. There is a problem with the color temperature of DJI UAV. In automatic white balance mode, if monochrome objects (such as green or other colors) appear in the picture, complementary colors will be automatically generated and the colors will be changed, resulting in inconsistent colors in the series of photos taken. Setting manual white balance will not happen. Generally, the white balance can be set to about 5400K manually during daytime shooting and about 5000K at night shooting. If shooting in RAW format, the white balance setting is not particularly strict, which can be adjusted later, but manual white balance must be set to make all photos have the same color.

3. Set to manual exposure

According to experience, time-lapse photography should not set aperture priority, speed priority and automatic exposure mode, but should make manual exposure with the simplest and most uniform M. First, choose the appropriate aperture according to the light (the aperture with the best imaging quality of the camera is the maximum aperture reduced by two or three levels. Taking Genie 4 and Yu 2 as examples, it is recommended to choose an aperture of 5.6), and then select the shutter speed according to the selected aperture. Using the best combination of aperture and shutter speed, check again whether the sensitivity is set to a low level, because the lower the sensitivity, the better the imaging quality. If shooting at night, the sensitivity can be set to the lowest sensitivity that can be shot, such as 200, 400, 800, etc. And the principle is that the lower the better. The aperture is opened to the maximum, and the shutter speed is generally controlled between one second and several tenths of a second. The slow door exposure ability of UAV is far stronger than we expected. I used to be exposed for four seconds at night, and the photos were very clear. If noise is generated due to setting high sensitivity, the noise can be reduced later. After all, getting a valuable picture is more important than the quality.