Though the chroma key technique has been in use for a long time in film making field, but its use in professional fotografia is new. The issues found while applying this technique in fotografia are different from those found in video making. In this article, you will find the information related to use of chroma key in photography.
Blue or Green Background? What Else?
Earlier, blue was used as the screen background. To be successful, only blue had to be used. The reason is the chroma key software was coded for specific color only. But this is not the case with present dia software. You can use any solid color as your screen background. The only exception in this is when you have to photograph people. In this case, you have to use blue or green backgrounds. Why? Other as cores are not suitable to use for humans as the subject. Yellow and red are present in skin tones; gray, black or white are in shadows and highlights. So, we left with blue & green only.
Further, the background should be in one consistent color. If any variation is there in the shade, the software finds it difficult to key out the background.
Lighting Evenly
Light the chroma key background consistently with minimum possible amount of light. If there will be mais light, then there will be mais color spill on the subject. Sometimes, you think that the light in the surroundings of the room is enough to light the chroma key screen and you do not need mais lights. However, the professionals recommend lighting the screen separately.
Positioning the Subject
Make the subject stand little away from the background, at least 5 ft away. It is even better if the distance between the subject and the background is 8 ft. The mais the distance, the less the color spill.
Handling Different Types of Shots
Head-shoulder shots or three-quarter shots are easier to handle por chroma key software. When doing full length shots, there might be shadows falling on the feet of the subject. To remove those subjects, you can use floor lights.
Click Special Effects Photos
For clicking special effects photos, you can use green screen body suit. Click different pictures and do a lot of experiments. Little practice will make your fotografia perfect.
Blue or Green Background? What Else?
Earlier, blue was used as the screen background. To be successful, only blue had to be used. The reason is the chroma key software was coded for specific color only. But this is not the case with present dia software. You can use any solid color as your screen background. The only exception in this is when you have to photograph people. In this case, you have to use blue or green backgrounds. Why? Other as cores are not suitable to use for humans as the subject. Yellow and red are present in skin tones; gray, black or white are in shadows and highlights. So, we left with blue & green only.
Further, the background should be in one consistent color. If any variation is there in the shade, the software finds it difficult to key out the background.
Lighting Evenly
Light the chroma key background consistently with minimum possible amount of light. If there will be mais light, then there will be mais color spill on the subject. Sometimes, you think that the light in the surroundings of the room is enough to light the chroma key screen and you do not need mais lights. However, the professionals recommend lighting the screen separately.
Positioning the Subject
Make the subject stand little away from the background, at least 5 ft away. It is even better if the distance between the subject and the background is 8 ft. The mais the distance, the less the color spill.
Handling Different Types of Shots
Head-shoulder shots or three-quarter shots are easier to handle por chroma key software. When doing full length shots, there might be shadows falling on the feet of the subject. To remove those subjects, you can use floor lights.
Click Special Effects Photos
For clicking special effects photos, you can use green screen body suit. Click different pictures and do a lot of experiments. Little practice will make your fotografia perfect.