For filmmakers, the green screen is a key component in making a film's special effects. For those of you planning on making your own film, the instructions below will point out what you need to do to build a portable green screen.
Steps
Step 1. Cut two PVC pipes of the length corresponding to the height of the green screen
Step 2. Cut both tubes in half and insert a fitting in the middle of each
It will serve to make the screen easier to carry.
Step 3. Cut another tube in half, so that the two halves are the same length
They should be between 10 and 15 cm shorter than the width of the green canvas. For example, if the fabric width is 150cm, cut the tube to 135 or 140cm.
Step 4. Cut the remaining tube into four pieces of the same length
They will serve as the legs of the stand. Connect two of the four pieces with another tee. Do the same with the other two. Apply caps to the ends of each tube.
Step 5. Cut two 6-inch pieces of waste PVC tubing to act as spacers at the base of the frame
Connect the pieces to the T-pieces.
Step 6. You are now ready for assembly
You can glue the fittings to a section of the PVC pipe, so that no pieces are lost in transit.
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Use the clamps to join the green screen to the top and sides of the structure.
Build a Portable Green Screen Step 6Bullet1
Advice
- Make sure the screen is taut. If there are any wrinkles, the camera will detect them. If, looking through the camera, you can see any wrinkles on the screen, they will be detected and imperfections will be seen.
- Assuming you've been paying attention to the lighting, it's not very difficult to make the green disappear using editing software. Sometimes, the program's filters will automatically detect a green screen. Trim the shot so that only the green screen is in the frame. Sometimes, it can be useful to use a background screen (representing, for example, a desert area).
- When using the green screen, lighting is essential. For shooting outdoors, an overcast sky should be fine. In a building or studio, the light must be uniform. A good idea is to use at least five lights: two main, two fill and one for the backlight. A cluster of clamp or shop lights should suffice.
- This project will cost around $ 40.
- You can make a green screen by coloring a white sheet with dye.
