10'+ screens are foolish - Page 6 - AVS Forum
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post #151 of 179 Old 03-19-2004, 06:59 PM - Thread Starter
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For my fellow CRT buddies unfamiliar with bosng's digital projector:
JVC G11 D-ILA

Here's his first attempt last month that caught my eye for megascreens:
http://www.maverixstudios.com/bosco/..._01+mecopy.JPG

-Clarence
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post #152 of 179 Old 03-20-2004, 05:55 AM
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wow bosng, those are some of the nicest screenshots I've seen. How far from the screen do you sit?

There's no place I can be, since I found Serenity. You can't take the sky from me.
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post #153 of 179 Old 03-20-2004, 09:59 AM
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i sit about 1x screen distance. approx 10-12feet. no pixel structure visible.
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post #154 of 179 Old 05-04-2004, 06:42 PM - Thread Starter
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Well my days with this megascreen are numbered because we're moving next month. So I thought I'd add the screenshots from last week's Meet & Geek to this "foolish" gallery.

Technically, only the Derby screenshot qualifies as 10'+ (it's 172" diagonal). The Rear Projection screen (showing Liv Tyler) was advertised as 10' wide, but the image material is only 9' 4" wide (but well over 10' diagonal, so maybe it qualifies on a technicality). Screens 3 & 4 are only a laughable 96" wide. ;)

Here are some screenshots of my multiplex setup with 4 projectors on 4 screens...

Screen 1:
Kentucky Derby watched live in 1080i HD (the broadcast was kinda blah because of the dreary weather), 12'x8' (144" wide, 172" diagonal), Electrohome Marquee 8000

Screen 2:
Armageddon, 112" wide, Sony VPH1271 on Rear Projection Da-Lite screen.

http://herndonrelay.org/avs/multiplex12.jpg

Screen 3:
Fifth Element, ECP3101 on 96" wide Formica.

Screen 4:
Pirates of the Caribbean, ECP4101 on 96" wide tile board.

http://herndonrelay.org/avs/multiplex34.jpg

-Clarence
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post #155 of 179 Old 05-04-2004, 09:20 PM
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Quote:
Originally posted by marcorsyscom
He mentions brightness=40 contrast=60 (XG contrast default is 75%).

I liked another line in that thread:
"The pj doesn't know what size screen it's on."

Deep. Think about it.
And to think, I'm an XG owner......... :^)

Cliff
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post #156 of 179 Old 05-04-2004, 09:23 PM
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Quote:
Originally posted by marcorsyscom
Well my days with this megascreen are numbered because we're moving next month. So I thought I'd add the screenshots from last week's Meet & Geek to this "foolish" gallery.

Technically, only the Derby screenshot qualifies as 10'+ (it's 172" diagonal). The Rear Projection screen (showing Liv Tyler) was advertised as 10' wide, but the image material is only 9' 4" wide (but well over 10' diagonal, so maybe it qualifies on a technicality). Screens 3 & 4 are only a laughable 96" wide. ;)

Here are some screenshots of my multiplex setup with 4 projectors on 4 screens...

Screen 1:
Kentucky Derby watched live in 1080i HD (the broadcast was kinda blah because of the dreary weather), 12'x8' (144" wide, 172" diagonal), Electrohome Marquee 8000

Screen 2:
Armageddon, 112" wide, Sony VPH1271 on Rear Projection Da-Lite screen.



Screen 3:
Fifth Element, ECP3101 on 96" wide Formica.

Screen 4:
Pirates of the Caribbean, ECP4101 on 96" wide tile board.



-Clarence
Man, I can't believe you didn't pop a breaker Clarence!!! LOL!

Cliff
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post #157 of 179 Old 06-12-2004, 02:50 PM
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Quote:
Originally posted by RobertWood
Who is that sweet young thing?
What is this in reference to? I see nothing...
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post #158 of 179 Old 07-29-2004, 05:24 PM - Thread Starter
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I was flipping through the channels last night and stopped when I saw this...

Ha! something at the DNC that caught my attention.

"With a giant 90-foot by 17-foot video screen that will bring people from all over the country into the Convention hall"

http://www.dems2004.org/atf/cf/{59B0...54}/fleet4.jpg

"A system involving five projectors has been designed to seamlessly light the massive main screen from behind."
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post #159 of 179 Old 07-29-2004, 06:03 PM
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Quote:
Originally posted by marcorsyscom
I was flipping through the channels last night and stopped when I saw this...

Ha! something at the DNC that caught my attention.

"With a giant 90-foot by 17-foot video screen that will bring people from all over the country into the Convention hall"

"A system involving five projectors has been designed to seamlessly light the massive main screen from behind."
You should see the size of the CRTs they are using. ;)

--Darin

This is the AV Science Forum. Please don't be gullible and please do remember the saying, "Fool me once, shame on you. Fool me twice, shame on me."
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post #160 of 179 Old 07-29-2004, 06:26 PM
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I bet it is one of those DIY fresnel lens/ cardboard box thingies using 17" monitors!!!

Brian
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post #161 of 179 Old 07-30-2004, 09:30 AM
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Jeez, now my 4m wide screen (13ft?) screen seems postively conservative.

DON'T feed the troll.
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post #162 of 179 Old 07-30-2004, 09:39 AM
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I would kill for an I-MAX home theater.

I could only imagine a boxing fight.

Tyson bitting off a chunk of ear, the size of a small car.

I hate old construction.
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post #163 of 179 Old 11-04-2004, 01:46 PM
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Quote:
Originally posted by Millsy
OK marco, here's a quick nemo shot. Havent watched the whole dvd yet, so I dont know the best scenes to take photos of...... I just picked a random scene.

Do you want to paste this into a post, I dont have a downloadable link.
WOW, What projector is this???????????????
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post #164 of 179 Old 11-04-2004, 03:13 PM - Thread Starter
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Quote:
Originally posted by MMan

http://members.aol.com/marcorsyscom/5m_nemo.jpg

WOW, What projector is this???????????????
That's Millsy's 9" Sony VPH-1292. See the first post for another one of his that inspired this thread.
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post #165 of 179 Old 11-04-2004, 04:15 PM
 
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SWEEEEEET
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post #166 of 179 Old 11-04-2004, 04:16 PM
 
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TOTALLY
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post #167 of 179 Old 11-04-2004, 05:10 PM
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Quote:
Originally posted by Clarence
90-foot by 17-foot video screen
Why, that's an incredible 5.2941176470588235294117647058824-to-1 ratio!

Larry
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My system (new larger pix!)
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post #168 of 179 Old 11-04-2004, 05:59 PM
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Graham, you said the 1292 was dim! That's looks awesome.

Please tell me the screen has at least a 1.5 gain or something. wow.

Or... is Millsy a dwarf? nah.

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post #169 of 179 Old 11-05-2004, 01:24 AM
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Millsy's a big boy!

His screen is soooo much fun to watch. It is a little dim, but who cares!

it is shooting onto a painted wall, no screen material or special pant.

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CRT Down Under
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post #170 of 179 Old 11-05-2004, 01:39 AM
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As his screen is 5m wide (that about 16.5 ft wide for the metrically challenged ;)) I'd say that Millsy is indeed a big boy :)
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post #171 of 179 Old 11-05-2004, 03:51 AM
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I see very little light on the person in front of the screen.
I have looked through this thread. It seems we should not be afraid to go below the recommender 12ftL.
Any digital projecor that is calibrated is most often below 500 ANSI lumen in high contrast mode. I would epect that also a d65 calibrated crt is less lumens than specified. With only 1-2 ftL or less the picture can still be appreciated.

However with an extended exposore you can take a pictures of stars not visible by the human eye.

Mattias Ohlson
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post #172 of 179 Old 11-05-2004, 04:01 AM
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Mattias,
you see very little light because there is very little light - the 1292 with new or low hour tubes will do about 8-10 ft-lambert set up reasonably and 12-15-ft-lambert when pushing it on a screen of half the width. So with double the screen size you get about 3 to 4 ft-lambert even when you don't mind to prematurely wear the CRT's, or about 2 to 2.5 ft-lamberts if you want to make good use of your unit for longer.
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post #173 of 179 Old 11-05-2004, 05:26 AM
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I love this thread. It is my inspiration to keep working on the clarity of my 10' wide/2.35:1AR screen.

Thanks to all who post their achievements. :)

I'm not as good as I once was
but I'm as good once as I ever was.
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post #174 of 179 Old 11-05-2004, 09:20 AM
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Quote:
Originally posted by Ruffneck19111
I would kill for an I-MAX home theater.

I could only imagine a boxing fight.

Tyson bitting off a chunk of ear, the size of a small car.
Almost fell out of my chair after reading that one!!

Alpha LS Guy
Formerly known as Maggie Guy
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post #175 of 179 Old 11-07-2004, 02:12 PM
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Quote:
Originally posted by Ohlson
However with an extended exposore you can take a pictures of stars not visible by the human eye.
No special settings on the digital camera, just the flash turned off.

It actually looks a little brighter than the pic suggests in real life, with the surrounding walls lit up abit more. But those who are used to a 1292 (or other top end crt) punching out a 2m image, will feel the image lacks punch. Most people (who dont know any different) are blown away.

Wall is painted with flat white wall paint. Have been meaning to experiment with other HT paint, but never got around to it.

I'm just a regular 6ft'r, maybe just a little over weight. ;)

I've since changed 1292's (from when that pic was taken), Graham has helped me further tweak this new unit. I should take another photo......
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post #176 of 179 Old 11-08-2004, 02:16 AM
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There is bit more in sharpness to come from Millseys big screen.

The problem is the mounting arrangement is diabolical to try to figure out even close the lens flapping positions for the rings.

Given a bit more time it could be better. Millsey and I where only at the setup for an hour or two.

Paint it with screen paint Andrew. Theres a huge improvement to be had.

Graham
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post #177 of 179 Old 11-08-2004, 07:31 AM
 
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Graham,

Are you talking about Goo or some other screen paint?

I was under the impression (from viewing different systems) that the Goo did not offer a significant improvement over paint such as Behr's premium ultra white.

Pete
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post #178 of 179 Old 11-08-2004, 03:25 PM
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I think goo would be the ultimate screen paint. But you could go broke trying to buy enough to paint that wall. I think there must be some other sort of coating that would be OK.

Maybe that Matisse flourescent white would be the go.

Having a black border around it would work wonders as well.

Graham
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post #179 of 179 Old 11-08-2004, 05:51 PM
 
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I plan on doing an experiment with a one piece mirror (either glass or ploy) and the high temp silver paint when I get a free weekend - not sure when that will be though. :(

I agree the Black border is a BIG deal...

Pete
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