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budk
Joined: 17 Mar 2006
Posts: 52
Location: Pittsburgh, PA
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| Posted: Mon Feb 04, 2008 8:22 pm Post subject: crt mounting question - what about 4:3 |
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I'm still building my room but I've run the Lens calc program and it states to mount my1208s/e 132.4" from the screen.
Ok, I understand that is for a 16:9 image and I will have some flexibility in the mounting of my projector and with the screen mounting so I will be able to move one or the other to get it dialed in correctly.
But, what happens when (if?) I which to 4:3 material? Does the top of the image stay the same? If so, does the bottom then drop below the screen or wtf?
I suppose the same question appies to the wider (cinemascope?) images?
I'm trying to figure out if I need to allow provisions for a way to mask the screen if I am showing anything other than 16:9.
Thanks!
Bud
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Zebu Fellenz
Joined: 21 Dec 2006
Posts: 2567
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| Posted: Mon Feb 04, 2008 8:48 pm Post subject: |
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If you go with a 16:9 screen 4:3 material will be pillarboxed within the 16:9 area, 2.35 material will be the same width as 16:9 but will be shorter.
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paw
Joined: 08 Mar 2006
Posts: 1176
Location: Arvada, CO
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| Posted: Mon Feb 04, 2008 11:19 pm Post subject: |
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| Zebu Fellenz wrote: | | If you go with a 16:9 screen 4:3 material will be pillarboxed within the 16:9 area, 2.35 material will be the same width as 16:9 but will be shorter. |
HMM!!! I think it depends on your source and if your DVD player can pillar box 4:3 material. If you try to display a 4:3 TV signal, you'll need some type of video processor or scaler that can perform the pillar boxing. CRT PJs don't have any video processing capability. They display what you give it.
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Aubrey
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Zebu Fellenz
Joined: 21 Dec 2006
Posts: 2567
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| Posted: Tue Feb 05, 2008 12:08 am Post subject: |
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| Quote: | | HMM!!! I think it depends on your source and if your DVD player can pillar box 4:3 material. If you try to display a 4:3 TV signal, you'll need some type of video processor or scaler that can perform the pillar boxing. CRT PJs don't have any video processing capability. They display what you give it. |
Right...
I've gotten so used to my HTPC that it seems foreign and strange that someone could be using a standalone player 
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Moose
Joined: 09 Mar 2006
Posts: 788
Location: Minnesota
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| Posted: Tue Feb 05, 2008 12:13 am Post subject: |
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The Lens program, I'm pretty certain, defaults to 4:3 but can be changed to 16:9. Did you do this?
You could take an alternative route and make a 4:3 screen and then keep running the Lens program until the 4:3 and 16:9 screens are the same width and fit your room. Devise a masking method when viewing widescreen material and you've got the ultimate compromise. It just depends on important 4:3 is to you. It's very important to me.
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In the real world, I am alan halvorson, King of the Wild Frontier and Swell Guy.
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budk
Joined: 17 Mar 2006
Posts: 52
Location: Pittsburgh, PA
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| Posted: Tue Feb 05, 2008 2:16 pm Post subject: |
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4:3 is not that important to me. But, my screen is 16:9 so your suggestion of running the program until the width of the 4:3 and the 16:9 are the same doesn't make sense. If anything, I would want the height to be the same or close and then I could apply masking to the sides when showing a 4:3 image.
I suppose my question is what happens to the image at different aspect ratio's..... does the center of any aspect ration stay in the center of the screen or does the image stay constant at the top or ?
I think the only 4:3 material that I would be displaying is either a broadcast channel or a Wii game. Almost all of the movies I would watch on DVD would be widescreen.
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dbaisey
Joined: 09 Mar 2006
Posts: 821
Location: Southern Cal LA / Seattle WA
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| Posted: Tue Feb 05, 2008 2:47 pm Post subject: |
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Using 4:3 the image center would remain the same no matter what aspect ratio the media is. Many run like this now esp the old movie buffs. If you are planning to use mostly for HD and widescreen DVD you can use 16:9. You would use width of screen for making the calculations. The center of the screen top to bottom would determine the drop needed when mounting. Doug
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Person99
Joined: 09 Mar 2006
Posts: 4899
Location: Flower Mound, TX
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| Posted: Tue Feb 05, 2008 5:16 pm Post subject: |
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| paw wrote: | | Zebu Fellenz wrote: | | If you go with a 16:9 screen 4:3 material will be pillarboxed within the 16:9 area, 2.35 material will be the same width as 16:9 but will be shorter. |
HMM!!! I think it depends on your source and if your DVD player can pillar box 4:3 material. If you try to display a 4:3 TV signal, you'll need some type of video processor or scaler that can perform the pillar boxing. CRT PJs don't have any video processing capability. They display what you give it. |
Guys, I can't believe some of you who should know better, still don't understand that our CRTs ARE NOT FIXED PIXEL DEVICES!!!!! 
You don't need the DVD player to pillar box the 4:3 material, your PJ can do it. Set up a memory block with the correct 4:3 aspect ratio and use that memory block on 4:3 material.
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Dave
A train station is where the train stops. A bus station is where the bus stops. On my desk, I have a work station....
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Person99
Joined: 09 Mar 2006
Posts: 4899
Location: Flower Mound, TX
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| Posted: Tue Feb 05, 2008 5:24 pm Post subject: |
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I've long been the diehard advocate of a 16:9 screen for a CRT-based theater. However, I'm now more of a (pseudo-)CIA guy if you meet the following:
1) Watch a decent amount of > 1.85:1 content.
2) Hate the "tiny" size of 2.35:1 content on a 16:9 screen
3) have a 9" or good 8" PJ
4) Have a room that will accommodate it
Basically, my current thought is, having a 16:9 based theater is really nothing more than having a big TV. Having a CIA or CIH theater is having a "movie theater".
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Dave
A train station is where the train stops. A bus station is where the bus stops. On my desk, I have a work station....
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budk
Joined: 17 Mar 2006
Posts: 52
Location: Pittsburgh, PA
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| Posted: Wed Feb 06, 2008 1:18 am Post subject: |
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It's a moot point for me... I already have the 16:9 screen so I will mask for anything other than that ratio... or I will live with the gray space.
I also plan on watching a lot of HD material so I think it's a good compromise. I suppose I could always get another screen if I really wanted 2:35
Thank you.
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