output projection no black!!! help please

[cardescalona]

I have install everything and everything works with resolume!!! great software guys congratulations!!!

I have one problem, probably is not my skills but on my projection I have a big square from my porjector light wich is I think gray light when you have no display (out put), after doing my slices ,sizes less than my whole projection , I still see the gray back light in my mapping, do you guys think I need a diferent projector I have a NEC VT580 LCD WITH LAMP 2000 LUMENS, DO I need one with led technology? or a short trow is necesary?
can you help me please??

[pfelberg]

No, you do not need a short throw projector.
Yes, the projector seems to be your problem. It seems to be an old projector: very weak and the light bulb is most probably old in usage hours. New projectors with with new light bulbs you get you a much better result.
Also, check your mask, if you are using one, for pure black or pure transparent value.
And... I was told once that DLP projectors are better than LCD projectors for mapping, Although my guess is that both work.

[LXConcepts]

The problem could be in what you're feeding the projector

If you send it a straight single image output do you still get the same result?

If the problem goes away its an issue with what you're feeding it, if it persists, it's a problem with the projector.

You could also output to a known working monitor instead of the projector to see if its a problem with the projector.

[cardescalona]

I found the problem, and it was that I have to set the projector in a distance where you dont see the black or gray color from projector, in a black room is real hard to do it speacilly if you have the projector close to a white wall , I figure myself and I notice I need to learn some tricks in order to make the human eye lie into my projections. Thank you for your help

CHEERS!!!

[Stickygreen]

sounds like you need a projector with a better contrast ratio. Black is the hardest color to project, don't forget....