Projector
A projector in the scene: where it stands, what lens it has, and what it covers. Its position and orientation are on Device Default Properties; everything here describes the optics and what it renders.
Lens
The field of view can be entered three ways, and they describe the same thing — pick whichever matches the number you actually have.
|
Field |
Description |
|---|---|
|
Throw Ratio |
Distance to the screen divided by image width. The number on a projector data sheet. |
|
H.FoV / V.FoV |
The horizontal or vertical angle instead, entered as Horizontal Field of View or Vertical Field of View. |
|
Aspect Ratio |
Of the projected image. |
|
Lens Shift |
How far the lens is offset from centre, horizontally and vertically. |
|
Shear |
Skew in the projected image. |
Camera calibration measures all of these and overwrites them. If the projector will be calibrated, there is no need to look up throw ratio or lens shift beforehand — leave them and let the calibration solve them. Entering them by hand matters only for a scene that is never calibrated.
Aim
|
Field |
Description |
|---|---|
|
Order |
The order the local Euler rotations are applied in. |
|
View target |
What the projector points at, shown as (auto) when derived from the scene or (user-placed) once moved by hand. Reset to auto returns it. |
Output
|
Field |
Description |
|---|---|
|
Project Stereo Content |
The projector shows one eye of a stereoscopic pair. |
|
Use Stereo Channel |
Which channel it takes — Channel 1 to 4. |
|
Enable Blending |
The projector participates in edge blending with its neighbours. |
|
Enable Global Brightness Correction |
Applies a brightness correction to this projector. |
|
Adjust Brightness |
The correction amount — for matching a projector whose lamp or laser has aged differently from the others. |
Blending is per projector, not per group. A projector with blending off in a blended array shows its full overlap at full brightness, which reads as one projector being too bright rather than as a blending setting.
Related
Panoramic Projection - Projection Wizard — creating projectors and a surface together
Blend Multiple Projectors — the blending this enables
Use Camera Calibration (CalibratorLite) — measuring lens and pose instead of entering them
Surface/Projector Assignment — which surfaces this projector renders