Hello,

I'm getting ready to do my first show that will require edge blending and I need some pointers. Of course, I couldn't start off with a simple 2 projector blend, I've got to start with 3 4:3 projectors rotated 90* to form one big 16:9 screen... at least it isn't curved too.

Basically, I've been using the mix keystone controls for a while, but never figured out how the aspect ratio setting works. I've just been adjusting the layer aspect ratios to make the images look right again. Is there some formula that converts the actual mix aspect ratio to the decimal value shown on the screen? 1.00 seems to be 4:3 if my memory is correct.

Any pointers on the math to figure out slice sizes and aspect ratios for each slice? I'm going to have a 10 or 15% overlap on both sides of the center, but only on the inside of the two sides, so the math isn't as easy as I'd like... Maybe I'm making this more difficult than it really is?

Also, does anyone have a good test image to use for tweaking blend alignment?

Thanks!