Rear projection . . . problem solved

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Nicky ,

What is your setup for your current small footprint video setup? I am now in the market for finding a video projector and screen.
 

NickyB

Gear and Equipment Moderator
OK, I just dug these off of my camera. I can't take credit for the idea as it came back from MBLV08 via one of my association members, but I did make a couple of improvements over the pictures he showed me. Its very lightweight, relatively cheap and has a very small setup footprint.

The main ingredients are:
(2) ADJ 1.5" O-clamps
(1) 4 ft. piece of 1" x 1/4" flat aluminum stock - bend at 45 degrees. (Steel is cheaper but heavier)
(2) pieces of 1" white velcro
(1) 30" x 40" white foam board (I also have a 48" x 60")
Can be used on either a 6 ft. speaker stand or 9 ft. lighting stand, with or without 2 ft. verticle extension.

Projector is mounted on a 12" x 12" sheet of 1/2" plywood with a 12" piece of the same aluminum stock. Its held in place by its tripod mounting bolt socket.



NickyB
 

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Hi Nick,

I like the setup...am interested although video isn't in the plan for this year (now that may change...)

Can you share the small footprint system list of components? Either here or PM....

Many thanks,
 

NickyB

Gear and Equipment Moderator
The foam board is from STAPLES - three 30" x 40" sheets for just under $19. I believe they call it project foam board.

NickyB
 

NickyB

Gear and Equipment Moderator
Both Lowe's and Home Depot carry it ... its slightly cheaper at Home Depot and they had a larger supply of it ... I shopped the Glen Burnie stores.

NickyB
 

Master DJ

Member
Make sure to check your projector manuals. Mine say to keep the projector within 15 degrees of horizontal.

We had one event where we needed to project straight down. The solution was to bend some steel at 45 degrees and mount a 12" square mirror to the steel. The projector was mounted upside down, perfectly horizontal, and it worked like a charm. The same method could be applied to keep your projector level and point it upwards.
 

NickyB

Gear and Equipment Moderator
My Dell projectors draw air in through the right side and the back, then exhaust it through the front left corner which when in the position shown would be straight up ... which is the way the laws of physics would dictate. However, your point is well taken!

NickyB
 

Jes Webb

Jes88
I loved those stands

The stands Nutz was using at MBLV08 were really cool. So simple but so proffesional looking.

Did anybody catch the projectors mounted in the Mono-Rail terminals? They were in Road Ready type cases, mounted parallel to the loading platforms and bounced off a mirror onto the floor. They were very well done.

They were displaying an aquarium scene on the ground and when you walked though the beam the water rippled under your feet.
 

Arthur

Active Member
I'm a video virgin....so please be gentle!

Let's say I purchase this unit and want to also use it at home...I got a MOST perfect spot....especialy with that short throw lense!

Can this project in high def? I have a hdmi output on my box...couldn't I use a hdmi to hdi connector and then use the audio outs of the box. Will it be projecting in High Def?

I'm debating on getting a lcd for this spot, but I could go the projector route and also use it for my weddings.

So will it project in high def? I'm confused!
 

Jes Webb

Jes88
I little education.....

Arther,

A little education here. I have not seen this unit but I can tell you this......

Hi Def Projectors typically have either an HDMI input or a DVI input. For the sake of this discussion they are both high def although some may argue that the DVI (also DVI-D)is higher resolution. HDMI carries sound as well (digital sound). DVI does not.

But SVGA is also more or less High def if the projector can display a computer screen of 1024x768 or higher and has the standard SVGA plug. The great thing about this is that you can get converters for this. For the most part this means an inline plug at $20 or a cable that has one plug on one end and the one you are trying to get to on the other. It really isn't as complicated as most people think.

But DVI and HDMI are digital and SVGA is analogue (I think) so that is slightly more complicated. but it can be done for a reasonable price still.

I may have opened myself up to debate but I believe I am correct on this matter. I concurred with www.zotzdigital before posting to get a second opinion.

and yes! I too have made a home theatre with one of my projectors. I bought a second set of cables so I can just unplug it and carry it out of the house when I need three on the same day. I also trade them out to keep the lamp life about the same. so my new ROCK BAND addon is only days away! :)
 

Jon Bruce

Sanity Checker
I would wait a couple of months to buy another projector...

For instance...
This is coming out...
http://www.engadget.com/2008/01/07/sanyo-shipping-plc-xl50-short-throw-projector/
Sanyo shipping PLC-XL50 short-throw projector

Sure, Sanyo's PLC-XL50 only features a 1,024 x 768 resolution, 2,000 lumens and a 4:3 aspect ratio, but all of that matters quite a bit less once you realize that it can beam out an 80-inch image with just 3-inches of space. You heard right kiddos, this thing only needs three tiny inches to totally take over your wall, and subsequently, the mounting options here are nearly endless. Additionally, it sports a built-in mono speaker, VGA input / output, audio in / out and a price tag of $3,295. Quite the premium for the short-throw goodness, eh?
and this
http://www.engadget.com/2008/01/16/epson-launches-ultra-short-throw-emp-400w-emp-400we-projectors/

or maybe one of these...
http://www.engadget.com/2008/03/06/nec-intros-network-ready-vt800-projector/

http://www.engadget.com/2008/02/20/epson-introduces-powerlite-83-and-822-multimedia-projectors/

http://www.engadget.com/2008/02/06/acers-h5350-entry-level-hd-projector/[/b]
 

Jes Webb

Jes88
One other thing to consider.......

My tech is a Lucas Arts certified projectionist. In fact, he will be leaving to do an install for a well known actor in LA next week.

He wanted me to mention that unless something is going on that he doesn't know about then the shorter the focal length the more difficult it can be to get a crisp clear focus. He also said that the edges may be considerably softer than the center of the image.

I am just mentioning this so you know what to look for when you make your purchase.
 

CJ Greiner

Supreme Gold Member
Re: One other thing to consider.......

Jes Webb said:
My tech is a Lucas Arts certified projectionist. In fact, he will be leaving to do an install for a well known actor in LA next week.

He wanted me to mention that unless something is going on that he doesn't know about then the shorter the focal length the more difficult it can be to get a crisp clear focus. He also said that the edges may be considerably softer than the center of the image.

I am just mentioning this so you know what to look for when you make your purchase.
That seems to make a lot of sense. In fact, you'd probably want to consider specialty screens when using such short-throw projectors that are designed to capture the light from these extreme angles and reflect it out towards the audience.

I also wonder at what angle you start to loose effectiveness for rear-projection. The light for rear-projection needs to be passed through the screen straight out towards the audience. When using a long-throw projector, almost no light intensity is lost as most of it is directed straight through to the audience.
What about short throw projectors? It would seem that most of the light would be reflected off the back of the screen instead of passed through. Hmmm...
 

Jes Webb

Jes88
WOW!

What about short throw projectors? It would seem that most of the light would be reflected off the back of the screen instead of passed through. Hmmm...
That's a great point.

I have seen several people trying to increase the brightness of a screen through scientific blah blah blah. All of them have had their drawbacks. Most of the drawbacks having to do with viewing angles.

None of them addressing rear view much less short throw.

Even a good old fashioned tried and true glass bead screen actually has a ridiculously low reflection value. I don't remember exactly. The first number that comes to mind is 18% but somebody may want to chime in.

In my market, I need to wait until several trendsettters endorse them. I can't afford a piece over a thousand that has limited value.

Rear projection foot print is a problem at a few places here. But those places rarely need me for video.
 
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