Green Screen Studio Setup: Space, Lighting and Cost

Quick Answer

What a green screen studio needs

Should you use a green screen at all?

Ask this first. A real set often looks better. A bookshelf, a plant and some depth behind the presenter look natural on camera. There is nothing to key and nothing to fix in the edit. For a weekly show with one look, a real set is usually the better buy.

A green screen wins when the background has to change. Pick it when:

• You need slides or charts behind the presenter, as in e-learning.
• You want a virtual set or a news-style desk show.
• Many presenters or brands share one room and need their own look.
• You film weather-style explainers in front of a map or chart.

A chroma studio is a bigger job than it looks. It needs more space and more lights, and someone has to key every video.

If none of these fit, read our YouTube studio setup guide. Teaching online? See our online teaching studio setup page.

Space

How much space a green screen studio needs

Most green screen rooms go wrong on space. People hang a screen on the back wall of a small room and stand right in front of it.

Leave a gap between the presenter and the screen

Green light bounces off the screen onto the presenter. This is called spill. It shows as a green fringe around hair and shoulders. The fix is distance. The further the presenter stands from the screen, the less spill reaches them, and their shadow stays off the screen.

How far? Several feet. More is better. A common rule of thumb is six to ten feet. We plan the gap in the room drawing before anything is bought. Distance also lets the screen fall a little out of focus, which hides creases.

Make the screen wider than your widest shot

The screen must fill the frame behind the presenter in every shot. If your wide shot shows wall at the edge, the key fails there. Plan the widest shot first, then size the screen.

Moving the camera back and zooming in also helps: a longer lens shows less background, so a smaller screen fills the frame. It does need more room depth.

Count the room depth

Add it up from the back wall: the screen, the gap, the presenter, the camera distance, and space behind the camera for the operator. Six feet behind the presenter and eight feet to the camera already needs fourteen feet.

The screen lights stand at the sides, so the room must be wider than the screen too. In a shallow room, keep shots seated and waist-up, or choose a real set.

The floor: fabric, chroma paint or a cyc wall

Waist-up shots can ignore the floor. If you show feet, the green has to run under them. You have three choices.

• Fabric. Cheap and easy to take down. But every wrinkle is a darker patch, so stretch it tight on a frame. Good for seated shots and tests.
• A painted wall. Chroma-key paint on a smooth wall is flat and permanent, with no wrinkles. It scuffs, so keep a tin for touch-ups. Paint on a floor wears fast.
• A cyc wall. It curves where the wall meets the floor, so no corner shadow shows as a dark line. It costs the most and needs civil work, but suits full-body shots and presenters who walk around.

Paint and cyc work are civil work. They sit outside our equipment prices, on their own line in the quote.

Lighting

Green screen lighting: two separate jobs

Most bad keys are lighting problems, not software problems. Think of it as two jobs: light the screen, light the person, and keep the two apart.

Job one: light the screen evenly

The keyer looks for one shade of green. Every hot spot, dark corner or wrinkle is a different shade, and it leaves a patch or eats into the presenter's edges. So light the screen softly, edge to edge.

• Use soft sources: LED panels, or lights through large softboxes. Bare, hard lights make hot spots.
• Place the lights at the sides or above, aimed across the screen, so no single spot gets too bright.
• Check it with zebras or a waveform. You want one flat level across the whole screen.
• Do not over-light it. Even matters more than bright. A brighter screen throws more green onto the presenter.

Job two: light the presenter on their own

Light the presenter like a good interview, with three lights:

• Key light. The main, soft light on the face, set to one side of the camera.
• Fill light. A weaker light on the other side, so shadows are not too deep.
• Back light, or rim light. Behind the presenter, aimed at hair and shoulders. It draws a bright edge against the green and helps hide spill. Skip it and hair turns into a fuzzy green mess.

Keep the presenter's light off the screen

The key and fill must not land on the screen, or they make bright patches and shadows. A softbox with a grid helps. The Godox QR-P70T softbox with grid in our rooms keeps light on the person and off the wall behind. (Gear links on this page go to OneProGear, our own gear store.) Distance helps here too.

Dress for the key

• No green clothes. Anything green disappears, including prints, logos and ties.
• Avoid shiny jewellery, sequins and glossy fabric. They reflect the green.
• Shiny glasses can reflect the screen. Tilt the head slightly or use anti-glare lenses.
• Fly-away hair is the hardest thing to key. A good rim light helps most.

Use lights with no fans

A green screen room runs more lights than most, and the mic hears every fan. We use fanless lights like the Godox UL60Bi, which make no noise on the recording.

Camera

Camera and recording settings for a clean key

Record as much colour as you can

The keyer works on colour, so the more colour detail the camera keeps, the cleaner the edge. Many cameras throw some away to save space. 10-bit 4:2:2 recording keeps more of it. The Sony FX30, the camera in our studio plans, records 10-bit 4:2:2 inside the camera. Whatever you use, pick a high-quality recording setting.

Sharp focus and a sensible shutter

Soft edges blend into the green and are hard to cut. Keep the presenter in sharp focus. Fast hand movement causes motion blur, and blur is half hand, half green. For most talking, a shutter of 1/50 is fine. If the presenter moves a lot, 1/100 gives crisper edges and is still safe on Indian mains power.

Mains flicker: India is 50 Hz

Mains power in India runs at 50 Hz. Some lights pulse with it, too fast to see, but the camera catches it as flicker or rolling bands. On a green screen, that makes the key shimmer.

So shoot at 25 frames per second with a 1/50 shutter, or 50 with 1/100. Many online tutorials use 30 or 60 frames per second. Those come from countries with 60 Hz power and can flicker here.

Lock your settings and keep the camera still

Set exposure, white balance and focus by hand, and lock them, or the screen shade drifts as the presenter moves. Keep the camera still on a tripod. A flat background does not move when the camera pans or zooms, so the trick shows. Moving-camera virtual sets need camera tracking, a much bigger build most company studios do not need.

Keying

Key it live, or key it in the edit

Keying is where software removes the green and puts your background in. You can do it live or in the edit.

Live keying with a switcher

For live shows, webinars and live classes, a switcher keys on the spot. Switchers in the Blackmagic ATEM Mini range have a chroma keyer built in. Plug in the camera and a laptop with your slides or virtual set, and the switcher puts the presenter in front. The ATEM Mini Pro ISO also records each camera clean, so you can redo a weak live key in the edit. Building for live shows? Read our live streaming studio setup guide too.

Keying in the edit

Keying later in DaVinci Resolve or Adobe Premiere Pro gives you more control over edges and spill. It takes editing time on every video, so count that in. Good light makes this quick. Bad light makes it slow, every time.

Green screen or blue screen?

Green is the default. It is bright, so it needs less light to look even. Most camera sensors also have twice as many green-sensing pixels as red or blue ones, so green records more cleanly. Pick blue if the presenter wears green or holds green props, or if green spill is hard to control. Blue spills less but needs more light.

Picking your green screen studio background

The background is a design job. Match its light to the presenter: if the background has a window on the left, light the presenter from the left. Match the camera height to the background's horizon, so the presenter does not float.

A news studio green screen setup needs a desk, a fixed camera angle and graphics that leave room for the presenter. For e-learning, keep one side of the frame clear for slides and stand the presenter on the other side.

Cost

What a green screen studio costs in India

Here is the ladder, from a screen you put up yourself to a room we build and hand over.

Who Builds It

Two partners, no account managers

Onewrk is two partners in Bengaluru. Kishore T builds and fits the studios. Nikhil Bhansali handles strategy, audits, consulting and training. No account managers. We publish our gear lists and prices, so you can check our thinking before you call.

We install across India from Bengaluru. For the US, UK and Australia, we plan the room by video call and join live calls while you set it up. Read how we design and build studios. Already filming? Ask for a free private review of your channel.