[ANSWERED] Stage setup: One stage, 2x2 beamer -> Keystoning best practice?
I have one flat screen with 4 beamer pointing to it, where each beamer makes one quarter of the screen (e.g Beamer 1 top left, Beamer 2 top right and so on). The beamer are overlapping but of course they are not perfectly aligned.
With the stage setup, I can configure the 4 outputs necessary for the 4 beamer.
What is the easyest way to do the output keystoning and blending for the 4 beamer? In which order do you aling it and what test picture do you use?
Thank you for your help
CitizenJoe last edited by
blending for the 4 beamer?
So long as you know roughly how your projectors are going to be hung (i.e. how much overlap there will be) you can use the Blend Maker to create the preliminary blend for you using all your displays as a starting point, then work from there. This works great in combination with the testpattern generator that @CitizenJoe linked above.
Fred last edited by
@merni As an extra tip, when you make the test pattern make it so it is cropped to the same aspect ratio of your blended screen. This makes it easier to know if you are warping the image. So if your screen (made of 4 blended beamers) is 4m * 6m make sure your test pattern is cropped to a ratio of 4:6 (eg 2000 pixels by 3000 pixels). Then you can line up the outer corners and edges of all the beamers and pull the inner corners in to match and blend.
If there are any features on your projection surface - door edges, holes, ridges etc it can be useful to mark them on the line up pattern too, as long as you measure them exactly and put them in the right place on the line up - it can make your line up faster and more accurate as you can quickly put the corners in the right place and drag the features to match.
Having perfect squares in your test pattern is very useful, you can measure projected squares with a tape measure and see if they are actually square.