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stefuel
Joined: 07 Mar 2006
Posts: 3353
Location: Green Harbor MA USA
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| Posted: Sun Oct 25, 2009 11:52 am Post subject: |
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| Mark_A_W wrote: | | garyfritz wrote: | Damn you Mark!! I just watched Star Wars VI last night, and *especially* in the space scenes, all I could see was the bars above & below the image area!!  
Guess it's time to get some Wilsonart **AND** some masking fabric....... |
MWHAHAHAHA!!
It's too late for Mike, and you're next 
Masks really are the number 1 tweak. Better than AC to LC, or 8" to 9". Hell, better than 1251 to G90.
My adjustable masks are just rolled around a 20mm dowel at the top, and hang from a string around the dowel at the bottom.
Really simple - one pull of a drawer string and they move. |
Mark,
If you wish to complicate things and automate your masking, pick up two HiTec HS-785HB sail winch servos and a Pololu SSC04A serial servo controller from WWW.pololu.com
You can figure out the rest
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Chip
A Barco is only a AmPro with training wheels
Card carrying member of the AVS chain gang.
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picree
Joined: 31 Mar 2006
Posts: 351
Location: Johnson City, TN
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| Posted: Sun Oct 25, 2009 12:18 pm Post subject: |
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| Spanky Ham wrote: | Ummm, no his name was Ken (KBK). Yes, he was a character. I think he had someone heres 1292 for a long time with a promise to radically improve the performance. I don't think anything ever materialized.
I am curious if this was the only thread you read over there as there were a lot more than that. |
I did read quite a lot at the time but that was so long ago. That's in the past now. Here is a link to the work done by algol that I referred to earlier when asked about screen paint formulas. It is in Archive 1 now. I eliminated the silver and gray components since I have a CRT. I did read about KBK but don't remember much now.
EDIT: I overlooked the point about inventor of "Screen Goo". Crackpot=algol from my recollection 
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stefuel
Joined: 07 Mar 2006
Posts: 3353
Location: Green Harbor MA USA
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| Posted: Sun Oct 25, 2009 1:13 pm Post subject: |
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All 1.3 gain commercial screens are not created equal. I mistakenly bought DaLite 1.3 material for my own screen and it sucks in comparison to Stewart. If I were to replace my material, it would be with Stewart. I plan to go back to a painted screen and that will be with Behr Ultra white (FLAT). This will happen when I build a new automated variable masking screen.
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Chip
A Barco is only a AmPro with training wheels
Card carrying member of the AVS chain gang.
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garyfritz
Joined: 08 Apr 2006
Posts: 12088
Location: Fort Collins, CO
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| Posted: Sun Oct 25, 2009 3:24 pm Post subject: |
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| Mark_A_W wrote: | | Hell, better than 1251 to G90. |
Just a leeetle bit of hyperbole there, Mark??
| Quote: | My adjustable masks are just rolled around a 20mm dowel at the top, and hang from a string around the dowel at the bottom.
Really simple - one pull of a drawer string and they move. |
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Mark_A_W
Joined: 15 Mar 2006
Posts: 3068
Location: Sunny Melbourne Australia
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| Posted: Sun Oct 25, 2009 11:47 pm Post subject: |
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| garyfritz wrote: | | Mark_A_W wrote: | | Hell, better than 1251 to G90. |
Just a leeetle bit of hyperbole there, Mark?? |
Wait till you have tried it.
| garyfritz wrote: | | Quote: | My adjustable masks are just rolled around a 20mm dowel at the top, and hang from a string around the dowel at the bottom.
Really simple - one pull of a drawer string and they move. |
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I've got some pics somewhere - they aren't good. It's hard to take pics of a black felt screen border in a black room...
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Mark_A_W
Joined: 15 Mar 2006
Posts: 3068
Location: Sunny Melbourne Australia
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| Posted: Sun Oct 25, 2009 11:51 pm Post subject: |
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| stefuel wrote: |
Mark,
If you wish to complicate things and automate your masking, pick up two HiTec HS-785HB sail winch servos and a Pololu SSC04A serial servo controller from WWW.pololu.com
You can figure out the rest |
Thanks....but where would I stop? I already have to manually close the curtains, and shut the doors. I have to manually turn on the hushbox switch, and manually turn on 5 amplifiers. I even have to manually pull the lever on the recliner!! And the fridge door...you have to PULL IT open manually to get a beer.
In the scheme of things the pullstring on the screen is not a big deal - and by hand you can get precise control - not all movies are the same.
I really don't mind, and it works fine.
Mark
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roland@b4
Joined: 07 Jul 2009
Posts: 82
Location: Reading UK
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| Posted: Mon Oct 26, 2009 9:15 am Post subject: |
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| Mark_A_W wrote: |
And the fridge door...you have to PULL IT open manually to get a beer. |
I can tell what the problem is with part of the install, You are using the wrong type of Sheila
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garyfritz
Joined: 08 Apr 2006
Posts: 12088
Location: Fort Collins, CO
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| Posted: Mon Oct 26, 2009 2:09 pm Post subject: |
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| Mark_A_W wrote: | | In the scheme of things the pullstring on the screen is not a big deal - and by hand you can get precise control - not all movies are the same. |
That's why I'd like to see your setup. I can do a simple mask but it would be a fixed-width deal. Adjustable would be nice. Can you sketch an approximation in Powerpoint or something?
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jkruger
Joined: 24 Oct 2007
Posts: 2435
Location: Carlsbad, CA
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| Posted: Mon Oct 26, 2009 3:01 pm Post subject: |
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| roland@b4 wrote: | | Mark_A_W wrote: |
And the fridge door...you have to PULL IT open manually to get a beer. |
I can tell what the problem is with part of the install, You are using the wrong type of Sheila |
You guys need to keep a couple of Sheilas around so there will always be one around to fetch another beer while the other is busy giving you he... er... entertaining you.
Last edited by jkruger on Tue Oct 27, 2009 5:09 am; edited 1 time in total
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Mark_A_W
Joined: 15 Mar 2006
Posts: 3068
Location: Sunny Melbourne Australia
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| Posted: Tue Oct 27, 2009 1:45 am Post subject: |
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| garyfritz wrote: | | Mark_A_W wrote: | | In the scheme of things the pullstring on the screen is not a big deal - and by hand you can get precise control - not all movies are the same. |
That's why I'd like to see your setup. I can do a simple mask but it would be a fixed-width deal. Adjustable would be nice. Can you sketch an approximation in Powerpoint or something? |
Hereyar
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masking.zip |
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picree
Joined: 31 Mar 2006
Posts: 351
Location: Johnson City, TN
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| Posted: Tue Oct 27, 2009 2:54 am Post subject: |
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| garyfritz wrote: | | That's why I'd like to see your setup. I can do a simple mask but it would be a fixed-width deal. Adjustable would be nice. Can you sketch an approximation in Powerpoint or something? |
Since we have now moved on to the topic of masking, Gary-here is a link to the details of the masking system I made out of 1/8" masonite board. Look through my photo album for other pics and details for the side masks. I have masking on top/bottom and sides. It's really hard to take any photos that do it justice. I can fill in any gaps via PM if you like.
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MAIN THEATER: (JVC RS2000; Yamaha UDP-LX500; Yamaha RX-V2400; Lumagen Radiance Pro, Vertex)
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garyfritz
Joined: 08 Apr 2006
Posts: 12088
Location: Fort Collins, CO
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| Posted: Tue Oct 27, 2009 3:21 pm Post subject: |
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Thanks Mark. You're right, it's hard to see, but that helps. Nice design, picree! Unfortunately I don't think I'm going to get that fancy. Existing limitations (like the sound panels on both sides of my screen) would make it very difficult to build in any kind of pulley system like that. I think for now I'll go with a simple "dowel sewn into fabric" approach. I can flip it up and hide it behind the top of the frame, and the bottom will just hang down behind the center speaker. Should take only a few seconds to change it in & out.
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VideoGrabber
Joined: 09 Apr 2006
Posts: 933
Location: Michigan
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| Posted: Wed Oct 28, 2009 2:46 pm Post subject: |
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Chip wrote:
> automate your masking, pick up two HiTec HS-785HB sail winch servos... <
When you said servos, at first I was a bit confused, since they're usually limited to a 180 or 270-deg rotational range. But I see these winch servos have been geared to run 3.5 turns. Misconception on my part, I guess. So with a 1" diameter rod, that means an 11" range for your masking (on each border). Increase the rod diameter for more masking range if needed.
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VideoGrabber
Joined: 09 Apr 2006
Posts: 933
Location: Michigan
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| Posted: Wed Oct 28, 2009 3:00 pm Post subject: Dark images enhanced a bit |
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Mark commented:
> It's hard to take pics of a black felt screen border in a black room... <
True. Thanks for sharing the pix. It does help though to toss in a bit of gamma boost, so I tweaked your images and rezipped them. It makes it a fair bit easier to see what's what.
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MarkAW_masking.zip |
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189 Time(s) |
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benareeno
Joined: 22 Mar 2006
Posts: 1614
Location: ottawa, canada
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| Posted: Fri Nov 06, 2009 3:10 am Post subject: |
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Masking is an absolute must...there is no doubt!
ALso, with respect to the screens I've had....I would say the Studiotek is the brightest, but the color is no better than the Goo screen. In some ways I think the goo was better than the Stewart.
Blackout cloth is complete crap...it's a dull and lifeless image..
UltraPureWhite is too blue biased...there are more neutral white paints out there. Perhaps a neutral white base with a GOO topcoat would be nice.
But, my favourite screen was the Dalite Cinema Vision....I just loved it. It had a strange way of showing green (if I was watching baseball for instance), but for movies, it was just excellent. You could likely buy a 4x8 piece of cinema vision for 150 or so...make your own frame and masks.
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garyfritz
Joined: 08 Apr 2006
Posts: 12088
Location: Fort Collins, CO
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| Posted: Fri Nov 06, 2009 3:25 am Post subject: |
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Where did you find CV for $150 for a 4x8 piece? I'm seeing prices like $13.50/sq ft, which is about $430...
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benareeno
Joined: 22 Mar 2006
Posts: 1614
Location: ottawa, canada
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garyfritz
Joined: 08 Apr 2006
Posts: 12088
Location: Fort Collins, CO
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| Posted: Fri Nov 06, 2009 3:09 pm Post subject: |
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Hmm, interesting. Stretching & stapling CV over my current BO frame would be a whole lot easier than buying Wilsonart, cutting it to size, gluing it to a backing, figuring out mounting, etc -- and the results would probaby be at least as good. My frame is about 52x90; add 4" on all sides to wrap & staple and I'm looking at about 41 sq ft. That's about $277 plus shipping. Still at least 2x what the Wilsonart would run me. Hmmm.
Any guesses how the CV would compare to Wilsonart?
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benareeno
Joined: 22 Mar 2006
Posts: 1614
Location: ottawa, canada
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| Posted: Fri Nov 06, 2009 4:16 pm Post subject: |
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My "guess" is that it would be better....
But, as I said...green can be a tad strange if there's a lot of green on the pic. I kinda liked it...
You could also go for Draper m1300 material....might be even cheaper still!
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dturco
Joined: 06 Feb 2009
Posts: 3778
Location: Eastern Shore Maryland
TV/Projector: Runco DLP VX-3000i Marquee 9500 parts doner
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| Posted: Fri Nov 06, 2009 4:17 pm Post subject: |
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| garyfritz wrote: | Hmm, interesting. Stretching & stapling CV over my current BO frame would be a whole lot easier than buying Wilsonart, cutting it to size, gluing it to a backing, figuring out mounting, etc -- and the results would probaby be at least as good. My frame is about 52x90; add 4" on all sides to wrap & staple and I'm looking at about 41 sq ft. That's about $277 plus shipping. Still at least 2x what the Wilsonart would run me. Hmmm.
Any guesses how the CV would compare to Wilsonart? |
1 word HURLEY.
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