Wednesday, June 18, 2014

wats the difference between two types of projector screen material?




biker


am planing to make a fixed frame projector screen by my self,and i want to know if i made a fixed frame projector screen by my self,whether it will be look as good as readymade fixed frame projector screens,heard tat there are two types of projector screen,they are : perforated and non-perforated screens .wat's the difference between these two screens ?..and which one will produce a high video clarity?and which is best to use?


Answer
Both can give a good picture. The choice comes down to whether you want to mount speakers (particularly the center speaker) behind the screen. If you do, you need an acoustically translucent screen.

Performated material is more prone to moire effects than non-perforated, although this is not likely an issue with properly designed cloth.

I made my own fixed screen and decided against the perforated screen material (see 1st link for one source -- and further info) largely because the size screen (110", 16:9) I wanted to build allowed me to mount speakers to the sides and below. I was able to use Blackout Cloth which is a bit less expensive, available locally, and does not attenuate sound.

In terms of how good it will look ... the screen itslef will (assuming you stretch it tight) look essentially identical to a commercial screen ... but the frame build quality will depend on you.

See a picture of results of my efforts at the 2nd link. You judge how well it stacks up against a commercial one ... works for me.

The 3rd link is to the AVS Forum DIY Screen Section -- lots of good info, and a place to get informed advice.

Projector/ Projection Screen Material Question...?




armored.ra


Hello. I was planning on building my own projector screen using blackout cloth- Commonly used for drapery.
I wanted to know which material would be better-They are both the same price:
This: http://www.onlinefabricstore.net/drapery-lining-fabric/drapery-lining-premium/hanes-eclipse-white-fabric-.htm
or
This: http://www.onlinefabricstore.net/drapery-lining-fabric/drapery-lining-premium/hanes-outblack-white-fabric-.htm

The first is composed of cotton and polyester, while the second is just made of cotton.
I don't really know much about fabric, so I would like to know which would be more useful for a projector screen.
Thank you



Answer
You definitely DON'T want the one that is 100% cotton. It's hard to say whether the poly-cotton one is right, either (though I'm guessing it is because it also mentions sound blocking.) The type of BOC you want has a shiny side to it that is what you'll want to project onto. Unless you're sure the poly-cotton one you linked is right, you're kind of taking a chance ordering it online. If you have a fabric store near you, it'd be safer to buy locally so you know exactly what you're getting. There are some online sources, though, that are tried and true. You might consider ordering your BOC here: http://is.gd/2Weh
Another nice thing about that particular source is that the BOC is 110" wide, so you could actually make a 16:9 screen that's over 16 feet wide and not have a seam!

Also, be sure to put a light absorptive black (felt or velvet) border all the way around. This stuff is a really quick, easy way to do that: http://is.gd/2Wed

FYI...

There's a nice DIY BOC screen how-to here: http://www.eldamar.net/house/ht/screenHowTo.html

A better method (in my opinion) for the frame can be seen here: http://archive2.avsforum.com/avs-vb/showthread.php?t=366191

Finally, once it's built, if you want to take it to the next level (actually the one beyond that!), you might consider painting the cloth silver. I won't go into that here, but feel free to ask another question about it and I'll respond with details.




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