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ncc1701d
Joined: 08 Aug 2007
Posts: 187
Location: sweden
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| Posted: Tue Mar 11, 2008 11:17 am Post subject: 4 way screen masking questions |
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Do all systems in existence use rollerbars and/or a lots of wires to pull masks?
Like this guy's? http://www.avsforum.com/avs-vb/showthread.php?t=941076
I have looked at it and while it seems to work, it involves a lot of wires and stuff to pull the masks..
Then there are those pro's like the ones from draper, stewart, vutec and da-lite like these ones:
http://www.cinemasource.com/articles/var_aspect_screens.pdf
Are there any other types out there?
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paw
Joined: 08 Mar 2006
Posts: 1176
Location: Arvada, CO
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| Posted: Tue Mar 11, 2008 3:36 pm Post subject: |
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Well, there could be manual methods
1 - glue super magnets just under your WilsonArt. Make panels of fabric with additional magnets that line up and are the correct polarity. The fabric could also be on rigid, light weight panels.
2 - Use window shade rollers and manually pull them down, up and sideways. The up and sideways shades would need hooks to keep the shades from retracting.
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Aubrey
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ncc1701d
Joined: 08 Aug 2007
Posts: 187
Location: sweden
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| Posted: Tue Mar 11, 2008 9:35 pm Post subject: |
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ok, but i meant automatic motorized systems..
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Person99
Joined: 09 Mar 2006
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Location: Flower Mound, TX
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| Posted: Wed Mar 12, 2008 2:49 pm Post subject: |
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Since I've been considering a CIA set up, I've had a mechanical engineer friend looking at this for me and there are really just a couple ways to do it. Essentially like the one with rollers you linked to, or for non-acoustically transparent, you can do rigid panels with actuators.
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ncc1701d
Joined: 08 Aug 2007
Posts: 187
Location: sweden
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| Posted: Wed Mar 12, 2008 10:04 pm Post subject: |
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Ok, i am going to try a version of the one i linked to, but with some of my own ideas. If this works i will post pics of it.
After that i will try a whole new approach, because i got an idea i have been thinking of 
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ncc1701d
Joined: 08 Aug 2007
Posts: 187
Location: sweden
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| Posted: Sat Mar 15, 2008 9:30 pm Post subject: NEw masking idea.. question? |
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The wilsonart is 16:9 format, and masking is only needed for 2.25:1 and 4:3 right? Only 3 formats including unmasked, right?
I mean only one mask at any time will be out? Not both at the same time for any format?
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AnalogRocks
Forum Moderator
Joined: 08 Mar 2006
Posts: 26706
Location: Toronto, Ontario, Canada
TV/Projector: Sony 1252Q, AMPRO 4000G
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| Posted: Sat Mar 15, 2008 11:34 pm Post subject: Re: NEw masking idea.. question? |
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| ncc1701d wrote: | The wilsonart is 16:9 format, and masking is only needed for 2.25:1 and 4:3 right? Only 3 formats including unmasked, right?
I mean only one mask at any time will be out? Not both at the same time for any format? |
Don't forget 1.85:1 and 2.35:1 also 2.40:1
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ncc1701d
Joined: 08 Aug 2007
Posts: 187
Location: sweden
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| Posted: Sun Mar 16, 2008 1:04 am Post subject: |
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i meant 2.35:1 not 2.25:1..
ok there are more formats, but all of them are constant width.. so for ALL formats except 4:3 there is only top and bottom masking needed?
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AnalogRocks
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| Posted: Sun Mar 16, 2008 1:25 am Post subject: |
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Yes that is correct.
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ncc1701d
Joined: 08 Aug 2007
Posts: 187
Location: sweden
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| Posted: Fri Mar 21, 2008 8:22 pm Post subject: |
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Does there exist a 2.70:1 format??? SmX says they can mask 2.70:1, but what movies are in that format?
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Person99
Joined: 09 Mar 2006
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Location: Flower Mound, TX
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| Posted: Fri Mar 21, 2008 8:33 pm Post subject: |
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This list has not been updated in awhile, but it is a good reference:
http://www.imdb.com/Sections/DVDs/AspectRatios/
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Dave
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ncc1701d
Joined: 08 Aug 2007
Posts: 187
Location: sweden
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| Posted: Fri Mar 21, 2008 8:36 pm Post subject: |
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Wow .. thanks.. i found that Ben Hur and Mutiny on the Bounty is 2.76:1..
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Person99
Joined: 09 Mar 2006
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Location: Flower Mound, TX
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| Posted: Fri Mar 21, 2008 8:58 pm Post subject: |
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| ncc1701d wrote: | | Wow .. thanks.. i found that Ben Hur and Mutiny on the Bounty is 2.76:1.. |
Before the academy standardized on 2.39:1, scope images where all over the AR map! 1.85 and 2.39 are 1.33x and 2.0x expansions, and those became the standards.
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Dave
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ncc1701d
Joined: 08 Aug 2007
Posts: 187
Location: sweden
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| Posted: Fri Mar 21, 2008 11:55 pm Post subject: |
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I have a local screen manufacturer i am going to visit and talk idea's with. They are EuroScreen if you know the brand?
Bjurab is the company, i think they were bought by Draper? a couple of years ago. Anyway it was an american company and they were impressed with the swedish quality
| Person99 wrote: | | Since I've been considering a CIA set up, I've had a mechanical engineer friend looking at this for me and there are really just a couple ways to do it. Essentially like the one with rollers you linked to, or for non-acoustically transparent, you can do rigid panels with actuators. |
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