Stage setup Projectors and two monitors

[Mikesull]

I have a fairly simple stage set up Q. Stage is a projected image flanked by two vertical monitors.  The verticals are basic Sharp HD monitors rotated 90 degrees, but the projector is projecting a 16X9 1920X1080 HD image onto a square 8 foot by 8 foot screen.  We plan on blacking out the edges of the projection to prevent projection bleed, but as far as Watchout stage set-up how do I set up the center screen?  Do I use the final 8X8 foot size or 1920X1080 pixel size? (Imagery will be flowing across the screens.)

[jfk]

...  We plan on blacking out the edges of the projection to prevent projection bleed, but as far as Watchout stage set-up how do I set up the center screen?  Do I use the final 8X8 foot size or 1920X1080 pixel size? (Imagery will be flowing across the screens.)

 

The projector still expects a 1920x1080 signal. So you still need to output 1920x1080,

use a pair of simple black still images on the top layer (or on an aux timeline set to always on top)

to mask the unused portions of the raster.

 

There is a chance the pixel density difference between the flat panels and the projected images

is outisde the magnification correction range of WATCHOUT (±300%),

not enough info to make that determination.

[Mikesull]

So using a 1920X1080 center display will allow me to use over size stills and have them move across the screens even though the center projection screen is physically much larger than the HD monitors to either side?

[Jonas Dannert]

We are missing key info here.

What is the physical size of your projected screeen and the visible surface on the monitors in question?

 

/jonas

[Mikesull]

The physical size of the screen is 8 feet X 8 feet.  The monitors are fully visible.

[jfk]

The physical size of the screen is 8 feet X 8 feet.  The monitors are fully visible.

 

You are missing the point.

• Please provide the exact hight and width dimensions of the projected size of the full 1920x1080 raster. In a pinch, you can get by with just height.

What you crop out of it after that is not important to the calculation.

• Please provide the exact height and width of the visible area of the flat panel.
• Please provide / confirm the exact resolution of the flat panels.

 

With that information you can calculate

the number of pixels per unit measure (dpi) for each display type.

Then, you can calculate the correction

to make an image spanning both display types remain the same actual size.

Open the Stage Display Dialog

Uncheck Width and Height same as Display Resolution and

Lock down the Display Resolution at the display's native pixel count.

You then convert the above correction to stage size in pixels to achieve the desired result.

[Mikesull]

The projection screen size is 8 feet by 8 feet.  The monitors native display is 1920 by 1080 and is 34 8/32" tall by 60 26/32" wide. They are mounted on stands and rotated 90 degrees.

[jfk]

Flat panel calculations
Convert to feet to keep all dimensions in the same unit measure.
34-8/32" = 34.25" = 2.854166667'
60-26/32" = 60.8125" = 5.067708333'
since the panel is rotated 90°
1920 / 5.067708333' =  378.8694758 pixels per foot

 

projection — 8'H consists of 1080 pixels = 135 / pixels per foot.
90° rotated  1080-p flat panel — 5.068' W consists of 1920 pixels = 379 / pixels per foot
379 / 135= 2.806440562, a correction factor inside of 300%

 

1920/2.8 = 684 (684.140625)

1080/2.8 = 385 (384.8291016)

 

The projector stays native at 1920 x 1080 stage size,

The flat panels 1920x1080 output become 684 x 385 stage size.

 

To do this correctly, you would also need the measurement from flat panel image edge

to the corresponding edge of the actual projected image (not your cropped image).

And you would need the distance from the top of the projected image to the top of the flat panel images.

 

You may have to use stage tiers to deal with that.

 

The stage Display dialogs may end up looking something like this ...

 

 

[Mikesull]

Thanks Jim! You're the man!