When Masking a screen how do you deal with Different Ratios? - AVS Forum
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post #1 of 9 Old 12-15-2000, 11:28 AM - Thread Starter
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Notably the most poplular rations 2.35 and 1.85? Do you make 2 sets of masks? Sorry I' a real newbie in the projector end of things
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post #2 of 9 Old 12-16-2000, 04:14 PM
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Welcome scarpad
here is a sight on the search menue that might help
http://www.avsforum.com/ubb/Forum9/HTML/000576.html

Hugo
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post #3 of 9 Old 12-18-2000, 02:40 AM
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I just recently finished my DIY screen, and her is how I handled masking.

1st of all the sceen is surounded by black velvet. I read that felt works better, but the velvet looks much better when the room is lit. Masking is accomplished with the aid of YXY. It's a wonderful computer program. It allowed me to setup different aspect ratio's for windvd, with blanking and everything. Now your probably asking why is he doing this? Just show the dvd full screen and mask tht top and bottom. Uh uh, to much work. So what I do is use YXY to move the dvd image to the TOP of the screen. This allows me to mask only the bottom.

For the physical masking I hung peg board on each side the screen. I then have a rod that has velvet hanging/draped from it, which is placed in hooks on the peg board. I have hooks at the proper intervals for both widescreen aspect ratio's and full screen. Any other formats can be accomodated this way, by simply adding hooks. The velvet has a pocket sewn in it so the rod slides through and is covered with velvet. Giving a nice straight edge for masking. Then curtains on the side of the screen cover the peg board board and rod ends, hiding it perfectly.

Hope this helps someone, and is fairly clear in explaing what I have done, as I just woke up.

Adam
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post #4 of 9 Old 12-18-2000, 08:09 AM
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This is my idea, get a 2:35:1 screen and put curtains on the side to make it 1:85 and draw even moreto make it 4:3.
Its just an idea I dont know if it will work

James
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post #5 of 9 Old 12-18-2000, 12:07 PM
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lawdawg, can you post pics?

Thanks.
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post #6 of 9 Old 12-18-2000, 01:44 PM
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S2K,

I'd love to but....my digital camera went dead! I'll try and see if I can round one up to take some shots. If all else fails I will use a "normal" camera and scan'm.

Adam
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post #7 of 9 Old 12-18-2000, 01:48 PM
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James,

There are several people on the forum with 2.35:1 screens, using constant height, variable width sidemasking. But only some CRT FPTVs have the electronic horizontal sizing adjustment range to go from 1.33:1 to 2.35:1 picture width. And digital projectors will have to either zoom in/out and refocus every time, or use a fixed imaging size at 2.35:1, and lose resolution for narrower piicture widths.

I prefer a 16:9 screen, and made a single masking panel for 1.85:1 and 2.35:1 movies. But using a HTPC and YXY software I have the advantage that I can reposition the 2.35:1 image at the top of the screen so I only need bottom masking.

I agree that masking and black curtains make the picture stand out on the screen.

By the way, I really like the top/bottom rollup shade design. It's very innovative.

-Dean.
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post #8 of 9 Old 12-18-2000, 07:58 PM
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I'll have a 2.40 screen with masking curtains on the sides. I plan to do manual pull first then eventually automate.

Phil
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post #9 of 9 Old 12-18-2000, 08:28 PM
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Quote:
Originally posted by lawdawg:
S2K,
I'd love to but....my digital camera went dead! I'll try and see if I can round one up to take some shots. If all else fails I will use a "normal" camera and scan'm.
Adam
Thanks lawdawg, I look forward to seeing your masking solution.
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