Silly (but possibly smart) question regarding 2.40:1 - Blu-ray Forum

4styler · 08-25-2009, 01:46 PM

I'm running a Mitsubishi Hc5500 and I thought to get rid of the pale gray letterbox with 2.40 films and not fork out $2000 AUD for a cinemascope lens, has anyone tried setting up a 2.40:1 mask in front of the projector lens? (I tried with cardboard

) Obviously you can't put it right in front of the lens cos the blur on the edge shows up, but has anyone designed something like this? I guess projecting onto a creamish white wall doesn't help the pale grey 2.40 crop but I thought why spend so much to get a 2.40:1 picture?

Beta Man · 08-25-2009, 01:59 PM

Have you thought about retractable curtains?

syncguy · 08-26-2009, 12:15 PM

I don't think it is practical to have masking in front of the lens - that will not work. I expect, the best method is to use screen masking.

jomari · 08-26-2009, 06:32 PM

likewise, ive heard of others attempting it, yet not getting the results they'd want. you wouldnt get that 'sharp' distinguishment between the picture and well, the borders so to speak.

all in all, a quick fix is normally a screen mask (which can be made quite easily), heck even some retractable curtains have been used as well, to the more complicated yet sophisticated look of a mechanical screen mask.

4styler · 08-27-2009, 07:13 AM

cheers guys, but i guess a black non reflective curtain is the way to go

syncguy · 08-27-2009, 01:22 PM

Quote:

Originally Posted by 4styler

cheers guys, but i guess a black non reflective curtain is the way to go

Yes. If you are thinking of constant image height (CIH), curtains are even easier.

Disky76 · 08-30-2009, 10:07 PM

Take a look at my gallery - if you are trying to mask down to 2.4:1, you might want to try the way I did it. Instead of masking the lens, I built panels that I attach to the screen which mask it down to 2.35:1 as a standard, however, they are adjustable down to 2.4:1.

It works well.

syncguy · 09-11-2009, 11:30 AM

Quote:

Originally Posted by Disky76

Take a look at my gallery - if you are trying to mask down to 2.4:1, you might want to try the way I did it. Instead of masking the lens, I built panels that I attach to the screen which mask it down to 2.35:1 as a standard, however, they are adjustable down to 2.4:1.

It works well.

Good example of masking. How do you attach panels to the screen?

vega2K · 09-11-2009, 02:01 PM

Quote:

Originally Posted by Disky76

Take a look at my gallery - if you are trying to mask down to 2.4:1, you might want to try the way I did it. Instead of masking the lens, I built panels that I attach to the screen which mask it down to 2.35:1 as a standard, however, they are adjustable down to 2.4:1.

It works well.

Nice set-up. But it is very hard to see from the pictures. Have you considered daytime (with lights) shots of the panels so that we can see your approach? How are they attached? How are they adjustable?

syncguy · 09-12-2009, 11:26 AM

Quote:

Originally Posted by vega2K

Nice set-up. But it is very hard to see from the pictures. Have you considered daytime (with lights) shots of the panels so that we can see your approach? How are they attached? How are they adjustable?

Yes please. I am wondering how these panels are attached and detached etc..

08-25-2009, 01:46 PM	#1
4styler Member Member since:Aug 2009 Blu-ray collection:72 Blu-ray reviews:29	Silly (but possibly smart) question regarding 2.40:1 I'm running a Mitsubishi Hc5500 and I thought to get rid of the pale gray letterbox with 2.40 films and not fork out $2000 AUD for a cinemascope lens, has anyone tried setting up a 2.40:1 mask in front of the projector lens? (I tried with cardboard ) Obviously you can't put it right in front of the lens cos the blur on the edge shows up, but has anyone designed something like this? I guess projecting onto a creamish white wall doesn't help the pale grey 2.40 crop but I thought why spend so much to get a 2.40:1 picture?

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08-25-2009, 01:59 PM	#2
Beta Man Moderator Top contributor Member since:Jan 2008 Location:Juuuuuuuust A Bit Outside.... Home Theater Gallery:4 Blu-ray collection:268 Blu-ray reviews: 18 Trading Score:25	Have you thought about retractable curtains?

08-26-2009, 12:15 PM	#3
syncguy Blu-ray Guru Member since:Mar 2008	I don't think it is practical to have masking in front of the lens - that will not work. I expect, the best method is to use screen masking.

08-26-2009, 06:32 PM	#4
jomari Moderator Top contributor Member since:Nov 2007 Home Theater Gallery:18 Blu-ray reviews: 2 Trading Score:2	likewise, ive heard of others attempting it, yet not getting the results they'd want. you wouldnt get that 'sharp' distinguishment between the picture and well, the borders so to speak. all in all, a quick fix is normally a screen mask (which can be made quite easily), heck even some retractable curtains have been used as well, to the more complicated yet sophisticated look of a mechanical screen mask.

08-27-2009, 07:13 AM	#5
4styler Member Member since:Aug 2009 Blu-ray collection:72 Blu-ray reviews:29	cheers guys, but i guess a black non reflective curtain is the way to go

08-30-2009, 10:07 PM	#7
Disky76 Active Member Member since:Nov 2008 Location:FL Home Theater Gallery:20 Blu-ray collection:61 Blu-ray reviews:6	Take a look at my gallery - if you are trying to mask down to 2.4:1, you might want to try the way I did it. Instead of masking the lens, I built panels that I attach to the screen which mask it down to 2.35:1 as a standard, however, they are adjustable down to 2.4:1. It works well.

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