Multiple Grid/Guides for Aligning Projectors?

[gcooke]

Hi,

I am working on a show where I have (2) stacked projectors and want to align/stack the projected images onto the surfaces for extra brightness.  I am using a Matrox TH2G.

My question is: can I display grid/guide patterns on multiple surfaces simultaneously?  My experience is that if I have a grid displayed on a surface(call it surface 1) and I select a grid on another surface(surface 2), the grid pattern will shut off on the surface 2.  Is this correct?

Thanks!

-George

[Drew Schmidt]

If you're having problems getting the grid to show on both simultaneously, save the grid image (in the surface editor) and use the saved image as a cue. Start the cue and adjut the surfaces.

[Joshua Langman]

If you are stacking projectors, wouldn't you have them assigned to the same surface anyway?

[Johnson, Philip]

Even stacking them on top of each other requires adjusting the grids to match.  2 degrees offset from one to another projector is noticeable when you’re trying to align the images. 

Phil Johnson 

Sent from my iPad

On Aug 19, 2018, at 10:06 AM, Joshua Langman <jlangma...@gmail.com> wrote:

If you are stacking projectors, wouldn't you have them assigned to the same surface anyway?

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[Joshua Langman]

Yes, of course, but you can adjust the two screens separately even within a single surface.

[micpool]

On Sunday, August 19, 2018 at 9:01:07 PM UTC+1, Johnson, Philip wrote:

Even stacking them on top of each other requires adjusting the grids to match.  2 degrees offset from one to another projector is noticeable when you’re trying to align the images. 

Yes, but you still only want 1 identical grid sent to both projectors. Joshua's post  refers to assigning 2 projectors to 1 surface so both projectors cover the entire surface. You get control points for each projector, i.e before you subdivide or warp 4 corner points for projector 1 and 4 corner points for projector 2.

Mic