Choose professional lighting for recording and broadcasting classrooms
Online education courses have become a new trend, so the number of recording and broadcasting classrooms is gradually increasing. However, many users report that the pictures of the course videos are blue and red, and the teachers' faces are black. There are two reasons for this explanation, the first one: no, and the second one: the lamp installation has not been debugged by a professional engineer.
There are two points to pay attention to when choosing lamps in the recording and broadcasting classroom: the color temperature of the lights is preferably 4000K, which is suitable for the shooting requirements of the camera used in the recording and broadcasting classroom, and prevents the phenomenon of blue or red in the shooting picture; The color rendering index is greater than 85, vivid response to the scene, the picture is more real.
The lighting installation and debugging of the recording and broadcasting classroom is the core content of a professional recording and broadcasting classroom, which directly affects the recording effect of the online course. What factors should be paid attention to in the debugging of the recording classroom installation?
1. Lighting installation: first look at the floor height of the recording and broadcasting classroom. Generally speaking, the recording and broadcasting classroom is transformed from a general classroom, the floor height is between 3 and 3.5 meters, and the surface light selection power is 100 to 120W. Adjustable viewing point LED meeting room lamps. Regarding the ceiling of the recording classroom, there are two main ones. The gypsum board ceiling should be rectangular LED meeting room lights, the opening size is small, the installation is simple and generous, and the appearance is beautiful; the 600*600mm mineral wool board ceiling uses square lamps to facilitate the installation. It is directly embedded in the ceiling structure without opening holes, and the installation is convenient.
2. Luminaire orientation: professional recording classroom top light spacing blackboard 600-1200mm, surface light spacing top light 1200-1800mm, can adjust the orientation of the lamps on-site according to different sizes and different needs of the recording classroom.
3. The distance between lamps and teachers: Teachers are the main characters in the recording and broadcasting classroom. A good or bad teacher's image can lead to good or bad course quality. The top light should be installed on the top of the teacher, and the horizontal distance between the face light and the teacher It is 1200-1800mm, and the face light should be a lamp with adjustable viewing point, and it should be lighted against the teacher’s face to highlight the teacher’s facial contour.
4. Illumination of lights: The central illuminance of professional recording classroom lights is 600-800lux. Dimmable LED meeting room lamps should be used. The brightness of the lamps can be controlled to make the recording classroom lights reach the relevant illuminance requirements. It will be too bright and dazzling, not too dark to see the teacher's facial expressions.
