Image adjustments¶

Trim one projector's brightness, contrast, gamma and color so that every projector in the rig looks like part of the same image.

Where the controls are¶

Image adjustments live with the projector, not with the media, so you set them per projector.

Open the Projectors view — click the projector name in the top bar. (Hovering that name instead gives you a dropdown to switch to a different projector; 1 to 9 picks one by position from anywhere in the app.)
Click the projector you want in the list on the left.
Make sure the Settings view is showing rather than Outputs.
Scroll down past the surface, resolution, transform and lens controls to the adjustment sliders.

Coming from the Scene tab instead? Select the projector there and click Projector Settings at the bottom of the sidebar — that takes you straight to the same form.

Every slider has a number box beside it. Drag the slider for a quick look, or type into the box when you need an exact value. All six controls start at 1 on a new projector, so typing 1 puts any of them back where it began.

The controls¶

Control	Range	What it does
Brightness	0 – 1	Scales the whole image down. `1` is the projector's full output; `0.8` puts out 80% of it. This is the control you use to bring a bright projector down to meet a dimmer one.
Contrast	0 – 1	Adjusts the separation between the light and dark parts of this projector's image. Move it in small steps and judge the result on the surface.
Gamma	0.1 – 3	Bends the midtones without moving black or white. Use it when two projectors match on white and on black but the middle grays still look different.
Red Gain	0 – 2	Multiplies the red channel. `1` leaves it alone, `0.5` halves it.
Green Gain	0 – 2	Multiplies the green channel.
Blue Gain	0 – 2	Multiplies the blue channel.

The three gains are your white balance: a projector that reads green next to its neighbor gets its green pulled down, or its red and blue brought up.

Per projector, not per clip

These settings apply to everything that projector shows, for the whole show. They are a rig-matching tool, not a way to grade one clip — to change how a specific piece of media looks, change the media.

Matching multiple projectors¶

Overlapping projectors betray every mismatch: a seam that is brighter than its surroundings, or a panel that reads slightly warmer than the one next to it. Work through it in this order — level, then color, then midtones.

Set the room and the projectors up as they will be for the show. House lights at show level, projectors warmed up for at least 15 minutes, and each projector on the lamp or laser power mode you will actually run. Matching a cold projector in eco mode is wasted work.
Put the same flat image on every surface. A plain white still is the right starting point; a mid-gray still is better for the gamma pass later. Assign it as you would any other media — see Putting media on a surface.
Pick a reference projector. Choose the dimmest one. Brightness only goes down from 1, so everything else gets pulled toward the weakest unit.
Match overall level with Brightness. Stand where the audience will be and compare each projector against the reference, one at a time.
Match color with the gains. Look at the white field and pull down whichever channels are over-represented. Leave the gains at 1 on your reference projector and only move the others.
Match midtones with Gamma. Switch to the mid-gray still. If two projectors agree on white but one gray looks muddier, that is gamma, not brightness.
Check the overlaps last. Regions covered by two projectors carry double the light, so they will read hot no matter how well the units match. Pulling Brightness down globally to fix that would dim the whole rig — instead, hold one projector back across the overlap with a soft-edged mask. See Masking.

Judge on the surface, not on the desk

A projector that is aimed at a dark or angled part of the set will read dimmer than its numbers suggest. Trust what you see on the actual surface from the audience position, and make the final call with the room in show state.

Working with others¶

Image adjustments are stored with the project and shared with everyone on the show, so a change you make appears on every connected browser. Each projector is individually lockable — if another operator is editing that projector, its sliders are read-only until they release it. See Locks.

Projectors — position, lens and resolution settings for the same projector.
Alignment — get the geometry right before you chase brightness.