http://www.avsforum.com/avs-vb This area is for the chat on setting up and using a theater with a fixed 2.35:1 ratio screen with digital projectors. en Sat, 21 Nov 2009 15:42:53 GMT vBulletin 60 http://images.avsforum.com/avs-images/misc/rss.jpg http://www.avsforum.com/avs-vb http://www.avsforum.com/avs-vb/showthread.php?t=1198342&goto=newpost Fri, 20 Nov 2009 15:55:38 GMT I was thinking that the reason that a-lenses are expensive is that they need to have many corrective elements to correct errors introduced by the lenses themselves.

It then struck me, why not use a mirror instead? It works in mirror telescopes. :rolleyes:

I realize that this might be a "theoretical" discussion, since it probable isn't very easy to match with a projector nor very cheap. I image the precision of the mirror has to be extremely high to get a good result. But still, do you think it's doable and would it be able to produce a superior picture without any chromatic abberation? ]]> 2.35:1 Constant Image Height Chat Drexler http://www.avsforum.com/avs-vb/showthread.php?t=1198342 http://www.avsforum.com/avs-vb/showthread.php?t=1198201&goto=newpost Fri, 20 Nov 2009 02:07:43 GMT One of our suppliers has a very limited supply of Panamorph UH480 Lenses (A-stock, full warranty) and their ATH1 Motorized slides. They are sealed box, A-stock level full warranty at an INCREDIBLE DISCOUNT. There are limited availability and once they are gone, they are gone. First come, first serve, NO EXCEPTIONS! Call, PM or Email for details. Thanks! One of our suppliers has a very limited supply of Panamorph UH480 Lenses (A-stock, full warranty) and their ATH1 Motorized slides. They are sealed box, A-stock level full warranty at an INCREDIBLE DISCOUNT. There are limited availability and once they are gone, they are gone. First come, first serve, NO EXCEPTIONS!

Call, PM or Email for details.

Thanks! ]]> 2.35:1 Constant Image Height Chat Jason Turk http://www.avsforum.com/avs-vb/showthread.php?t=1198201 http://www.avsforum.com/avs-vb/showthread.php?t=1197177&goto=newpost Mon, 16 Nov 2009 23:25:53 GMT Team,

There have a been a lot threads centered around anamorphic setups, but there has not been a lot of equipment listed and how they're setup. Which is the reason why i wanted to start a thread that I'm asking the team to post their setup, how it's setup, and if it's a done deal or will you change as a result of the push towards zooming.

tbase1 setup
Stewart videomatte 200
Sony ruby Projector ( will soon change projector)
isco IIIL Lens
DVDO VP50 Scaler


Fix lens setup using scaler to change AR.

I'm happy with my setup and don't plan on zooming.

p.s I hope this is not viewed as a dumb thread, because I think there's new members looking for some direction. ]]> 2.35:1 Constant Image Height Chat tbase1 http://www.avsforum.com/avs-vb/showthread.php?t=1197177 http://www.avsforum.com/avs-vb/showthread.php?t=1197075&goto=newpost Mon, 16 Nov 2009 18:38:49 GMT I've been eying the epson 8500ub for a few weeks, and now that it's available, I'm having some second thoughts b/c it can't do 2.4:1.

My system will be for watching movies only and I want the biggest picture that I can possibly squeeze out of my small room. Please let me know your opinions as to whether or not I should persue a 2.4:1 screen or just get the epson/16:9 and be happy with it.

My room is 14 feet front to back. Throw distance would be around 12 - 12.5 feet.

Thx. ]]> 2.35:1 Constant Image Height Chat jimluu http://www.avsforum.com/avs-vb/showthread.php?t=1197075 http://www.avsforum.com/avs-vb/showthread.php?t=1196830&goto=newpost Sun, 15 Nov 2009 21:43:38 GMT My theater has been up and running for a year or so with a DLA-HX2. Recently I upgraded to an RS15 and as such, now have enough lumens for a cinemascope upgrade.

Initially I will use the 'zoom method', but am on the wait list for some French Prisms.

Nonetheless, this thread will track the project.

See the initial Construction Thread at:

http://www.avsforum.com/avs-vb/showthread.php?t=879747

The 16:9 setup looked something like this:



With the 16:9 screen removed:



With the new 2.40:1 screen hung (no trim yet):



And lastly, the fabric samples for the curtains (I plan to learn to sew - no laughing please - will hand the machine over to my daughter when done):



Ultimately, there will be
- black fabric panels above and below the screen
- a track system with sliding panels for masking,
- curtains on the same track system typically covering the left and right sides of the screen wall
- some form of proscenium covering the edges of the curtains and track holding the curtains and masking panels - likely just black fabric, but I have not yet decided.

All opinions on proscenium design and curtain fabric choice.

Regards,
db ]]> 2.35:1 Constant Image Height Chat dbbarron http://www.avsforum.com/avs-vb/showthread.php?t=1196830 http://www.avsforum.com/avs-vb/showthread.php?t=1196316&goto=newpost Fri, 13 Nov 2009 20:53:00 GMT I'm about to install my Panamorph lens and it just occured to me that watching a movie like The Dark Knight that maybe a problem is created by the changing aspect ratio. Without my lens the scenes that were shot in Imax filled the screen top to bottom and then went back to having the black bars during the normal scenes. When I put the lens in place and set the projector to take care of the vertical stretch will this cause those Imax scenes to extend beyond the top and bottom of my screen? Sorry if this is a stupid question that should have an obvious answer. ]]> 2.35:1 Constant Image Height Chat davidk63 http://www.avsforum.com/avs-vb/showthread.php?t=1196316 http://www.avsforum.com/avs-vb/showthread.php?t=1196226&goto=newpost Fri, 13 Nov 2009 15:58:59 GMT I only understand this via room constraints. 8' seems very small. Why are people not pushing the limits to 12-14' wide?

I'm at 11 ft wide (non-scope setup) from 16ft throw, I know a lot of the LCDs can do this. I can't imagine why people are putting money into anamorphic lenses to only get 8' wide 2.35 images?

From what I gather, the average user's throw is 15-17 feet.

-ELmO ]]> 2.35:1 Constant Image Height Chat elmalloc http://www.avsforum.com/avs-vb/showthread.php?t=1196226 http://www.avsforum.com/avs-vb/showthread.php?t=1196214&goto=newpost Fri, 13 Nov 2009 15:29:51 GMT Following the theme of Art's entertaining thread, I am raising the following question: If Art, or anybody else, gave you a cheque for $10,000 to improve your CIH home theater, how would you spend it? Would you keep your present projector and add an A-lens, or would you buy a new projector and maybe a masking system or new screen? Or would you put the money into your sound system or theater environment? Here's $10,000 - Where would YOU spend it to get the most improvement in your CIH system?

For me, I would buy a Panasonic AE4000 for $2000.00, a Carada masking system for $5000.00, a new 2.35 screen for about $1,500, and upgrade my sound system for $1500.00 ]]> 2.35:1 Constant Image Height Chat taffman http://www.avsforum.com/avs-vb/showthread.php?t=1196214 http://www.avsforum.com/avs-vb/showthread.php?t=1195824&goto=newpost Thu, 12 Nov 2009 06:07:28 GMT Was going to order a 120" diagonal 2.35:1 BW Carada screen. Want to make sure my seating distance is okay and not too close before I order it. The seating distance is going to be 10' 6". That is 2.68H, so it falls within the 2H and 4H distance, but I guess short of the ideal(?) 3H. I also projected the image on wall and I liked it (I saw almost the entire Iron man and it was ver immersive), but it is on a dark wall and I not sure if a brighter screen would change that. My other option is a smaller 112" diagonal 2.35 screen, which would give me a 2.93H.

Projector is Panasonic AE4000 in a light controlled room with very dark walls, ceiling, carpet. Dimension of the room 14' long x 11' wide x 8' high. Throw distance is about 12' 8". This makes it close to the max zoom, I am not sure if that is a bad idea since I remember reading remarks that lens are not idea in their extreme positions. My other reason for going with the bigger screen is it makes it easier to make the center of the lens fall within the screen area (so I can use the auto zoom function) with out making the screen too high or the PJ too low.

Thanks for any input. ]]> 2.35:1 Constant Image Height Chat Sunil http://www.avsforum.com/avs-vb/showthread.php?t=1195824 http://www.avsforum.com/avs-vb/showthread.php?t=1195234&goto=newpost Tue, 10 Nov 2009 10:49:22 GMT All,

Is it even possible for the Sim2 HT380 DLP projector to have an anamorphic lense attachment? I've been told by some sources yes, others have said no due to the projector's lense recessed placement!





Anyway the lense is 16ft (192") away and the 16x9 image is 129" wide. Currently it's a 1.488 throw ratio.

I can decrease the 129" width, as it stands the resulting scope image would be 14.25 ft wide which may be just a little too large for my room anyway.

If the Sim2 can even support a lense, do I have to go with an ISCO 3L type lense at these measurements?

Thanks,
ELmO ]]> 2.35:1 Constant Image Height Chat elmalloc http://www.avsforum.com/avs-vb/showthread.php?t=1195234 http://www.avsforum.com/avs-vb/showthread.php?t=1195064&goto=newpost Mon, 09 Nov 2009 20:24:06 GMT I am getting close to buying a projector - probably a JVC or Planar/Runco.

In getting setup for doing a 2.35 screen, I'm curious about how 1.85 AR movies are handled?

If I let the projector do the vertical stretch, I assume I would need to stretch the 1.85 and 2.35 differently.

Then, the horizontal expansion would occur by means of an external lens.

I would then assume that I would have black bars on the side of a 2.35 screen.

Are these assumptions correct?

Thanks,
W ]]> 2.35:1 Constant Image Height Chat english_1969 http://www.avsforum.com/avs-vb/showthread.php?t=1195064 http://www.avsforum.com/avs-vb/showthread.php?t=1194990&goto=newpost Mon, 09 Nov 2009 16:40:23 GMT Hello, i have an problem.

First my projector is a Philips bSure XG1.
LCD 3x 0.7" high-temperature poly-silicon active matrix LCDs
Lens F/1.8 - 2.2 ; f = 28.4 - 34 mm; 1.2x Manual Zoom; Manual Focus
1.2x Manual Zoom; Manual Focus
Projection distance 1,1 - 10 m (image diagonal 27.5" - 250")
and it's an 4:3

Ok, now i need an lens for a cinemascope view (2.36:1)

and i found something:

(at first www. )
link : zuggsoft.com/theater/prism.htm
link : schneideroptics.com/ecommerce/CatalogItemDetail.aspx?CID=91&IID=6262
link : isco.eu/fileadmin/isco/_products/homecinema/docs/ISCO_PL_Anam_Attach_WEB_12_2008.pdf
link : http://archive2.avsforum.com/avs-vb/...&&#post6067975

Ok, i read something about 1.77x Anamorphic Attachment and it's up to 1.8" panel size and my projector is an 0.7" ?? Can it work?
Or can i do something with prisms? For stretch 4:3 to 2.36:1 (or most like to)

Greeting, Gunther ]]> 2.35:1 Constant Image Height Chat ccsoon http://www.avsforum.com/avs-vb/showthread.php?t=1194990 http://www.avsforum.com/avs-vb/showthread.php?t=1194576&goto=newpost Sat, 07 Nov 2009 21:07:04 GMT Projector = PT-AE4000 Panasonic
Intended Use = Movies Only
Lense to Screen Distance = 163"
Seating / Viewing Distance to Screen = 150"
Lighting = No windows in the room totally dark, dark brown curtains on all 4 walls, dark brown carpet on the floor white ceiling.
Movie Formats = Both Blu-Ray and Standard DVDs
------------------------------------------

What would be the best screen size / AR (235:1, 240:1, 16:9) for the above setup. The projector will only be used for watching movies no TV/GAMES or anything else.

Thanks ]]> 2.35:1 Constant Image Height Chat Ldesp http://www.avsforum.com/avs-vb/showthread.php?t=1194576 http://www.avsforum.com/avs-vb/showthread.php?t=1194141&goto=newpost Fri, 06 Nov 2009 01:38:57 GMT I have an anamorphic lens that is mounted on a motorized sled with 12v Trigger input. When I turn on the sled, lens moves out of the way to OFF position. I want the lens to move back in when I engage "VERTICAL STRETCH" feature of a video processor / projector. "VERTICAL STRETCH" is one of the menu options on the projector. I don't have any video processor but plan to get DVDO edge (which does not have 12v trigger out). How could I add IR/RF capability to motorized sled? Sled DOES NOT has an IR sensor input. I wonder if I could build IR/RF receiver/decoder which could somehow engage/activate the 12v trigger input on the sled when I pass the discreet IR code for "VERTICAL STRETCH" to the projector or video processor causing the anamorphic lens to move in place. Disengaging the "VERTICAL STRETCH" on video processor should move out the lens to its OFF position (by triggering the sled). How difficult would It be? any ideas?
I know this is possible with VP50Pro with its trigger output, but looking for DIY solution first.
I greatly appreciate any insight.
Thanks,
Satbir ]]> 2.35:1 Constant Image Height Chat sstalwar http://www.avsforum.com/avs-vb/showthread.php?t=1194141 http://www.avsforum.com/avs-vb/showthread.php?t=1194103&goto=newpost Thu, 05 Nov 2009 23:46:12 GMT We want to join the CIH club and are getting a Pansonic PT 4000 projector.

We sit 13' from our 59" high 16:9 screen now and like that distance just fine. If we go to a 59" high 2:35 screen it will be 141" wide. Will we still be comfortable sitting at 13' from this screen?

Thank you. ]]> 2.35:1 Constant Image Height Chat Big Picture http://www.avsforum.com/avs-vb/showthread.php?t=1194103