Prometheus Master Of Technology... - Page 11 - AVS | Home Theater Discussions And Reviews
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Old 12-19-2009, 11:50 AM - Thread Starter
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Old 03-29-2010, 06:23 PM - Thread Starter
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In movie theaters hunting range scopes are used to do convergence, focus and other precision adjustments.

While we are always trying out new things with the scope at the lab, this was the chance to try it's practicality in the field on a real job.

As part of a lens tweak for focus and aspect ratio accuracy the scope came in handy eliminating the need to have a second spotter up front at the screen position.






The inexpensive tasco performed admirably.
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Old 03-29-2010, 06:38 PM
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I am eagerly awaiting your next 3d project.
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Old 03-29-2010, 06:39 PM
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imagine what you could do with a nice one

(I used to shoot competitively)

Dan

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Old 04-03-2010, 11:07 PM - Thread Starter
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Old 04-03-2010, 11:09 PM - Thread Starter
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Old 04-12-2010, 09:14 PM - Thread Starter
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Old 04-13-2010, 09:36 AM
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Peter,
How are you measuring you MTF ? I'd like to see what I have with my HT5000.

I have a friend who helped build the corrective optics for Hubble, he said a glass with 100% transmission for practical purposes is available and he had no issues helping me with the project.

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Old 04-13-2010, 10:10 AM
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You best be careful Art - or you'll have a crowd clamoring for some of that glass in no time .

Verum postulo res.
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Old 04-13-2010, 10:19 AM - Thread Starter
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Old 04-13-2010, 11:58 AM
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I recently bought a porthole with glass from Kelmar. Very good MTF. You do not want to use to thick of a glass MTF will take a hit. Room in progress.
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Old 04-14-2010, 10:39 PM
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Alan, is it true the glass is also "iron free"?

Mark Techer

I love my Constant Image Height system!
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Old 04-15-2010, 12:20 AM - Thread Starter
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That looks like an installation in progress to me, I wonder what state?

I like your glass inclination better than the way I installed this one, fortunately is held in place by magnets and that makes the tilt reversible, right now there IS a less intense glass kickback reflection hitting the lens area, if I position it like your it may miss more lens area.
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Old 09-08-2010, 07:20 AM - Thread Starter
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Last night the Prometheus Room became venue of the only Household in the world to be able to Play Blu-Ray 3D in their DCI cinema projector.

THE TORUS SCREEN proved to be an amazing asset, enhancing the depth, immediacy and apparent resolution even in the most dull of the 3D tracks in the Disney sample disc.

Goes to show that the Torus keeps on coming back as a worthwhile tool in High End Screening room design.
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Old 09-08-2010, 07:27 AM
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Quote:
Originally Posted by CAVX View Post

Alan, is it true the glass is also "iron free"?

Mark

I would not know the answer to that one without a little research or to make a quick phone call.

Quote:
Originally Posted by CINERAMAX View Post

That looks like an installation in progress to me, I wonder what state?

I like your glass inclination better than the way I installed this one, fortunately is held in place by magnets and that makes the tilt reversible, right now there IS a less intense glass kickback reflection hitting the lens area, if I position it like your it may miss more lens area.

Yes in progress. I am impressed just how well these commercial portholes keep the sound isolated. Definitely worth the cost.
Just installed a much larger window below for the 35mm projection. Will update with a picture soon.
Peter we now share the same state !

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Originally Posted by CINERAMAX View Post

Last night the Prometheus Room became venue in the only Household in the world to be able to Play Blu-Ray 3D in their DCI cinema projector.

THE TORUS SCREEN proved to be an amazing asset, enhancing the depth, immediacy and apparent resolution even in the most dull of the 3D tracks in the Disney sample disc.

Goes to show that the Torus keeps on coming back as a worthwhile tool in High End Screening room design.

Congrats on the BD playback.

I am a fan of the Torus. It looks sexy as he!! sitting idle. Something I would consider but to late for my current room design. If I ever decide to add a Torus, Peter I would introduce you to the project.
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Old 09-08-2010, 09:41 AM
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Quote:
Originally Posted by CINERAMAX View Post

Last night the Prometheus Room became venue in the only Household in the world to be able to Play Blu-Ray 3D in their DCI cinema projector.

THE TORUS SCREEN proved to be an amazing asset, enhancing the depth, immediacy and apparent resolution even in the most dull of the 3D tracks in the Disney sample disc.

Goes to show that the Torus keeps on coming back as a worthwhile tool in High End Screening room design.

Who else is using a toroidal screen ?

Art

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Old 09-08-2010, 11:44 AM
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All the folks with an Advent videobeam;-).
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Old 09-08-2010, 12:53 PM - Thread Starter
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Many of 600 AMC Torus Auditoriums Have been re-fitted with high gain Torusses coupled with the SONY Realta Dual Lens RealD system, the very finest LCOS 3-D projection systems on the field (although we are firmly in the DLP 4K 3-D Camp).

A very famous European power couple (Developer/fashion Model) are preparing a Penthouse with a swimming pool that crosses the whole flat.

You can actually splash water 3 levels down into the theater area. This will have a 3-D 4K Torus 18 feet wide. probably Gain of 1.8.







This one has gone from Woven to Torus due to the potential for ambient light.


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Old 09-08-2010, 12:59 PM - Thread Starter
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Old 09-08-2010, 01:50 PM
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Hi, with witch Program u have do the scetches?

PS. This cinema is awesome
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Old 01-18-2011, 10:08 PM - Thread Starter
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The last color calibration was done with a Minolta CS-200, I could not place my finger on it but the color palette seemed off to me and I did not like particularly what it was doing to the black levels.

So I borrowed a recently calibrated pr-650.



You are seeing this first HERE! After the Calibration Despicable Me took on additional 3Dimensionality from the superior colorimetry.





Not only did I shoot separate gamut files for 2-D and 3-D but since this is a CIH setup I shot flat and scope files (which did have slightly different readings too).




The moral of the story , use Photo Research that makes like the twentieth time the ISF recommends something that when I try it, messes up with my image.
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Old 01-22-2011, 07:21 PM - Thread Starter
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We replaced the TI board that after 2 years and 3 months was giving error messages, the projector was not really acting up except the lens would take a long time to change aspect ratio (like 50 seconds).

The former lens was a minolta 1.6-2.5 lens.

We put in a new and improved series 2 TI Board, we replaced the lens with a Fujinon 1.6-2.5 and we completely realigned , centered and secured the lens mount with boresight and Scheimflug adjustments.

Before if you removed the lens you had to futz with it afterwards to get it back in focus. Now you can put it in and out 10 times whilst preserving this new level of never achieved before razor focus.

WELL ..... I have never seen a better setup Barco projector anywhere!.

The sharpness form the more precise ti control and superior Fujinon lens has easily tripled its corner-to-corner absolutely sick perrrfect focus, and on a TORUS!

The owner is in Aspen I told him should consider acquiring some adult diapers for when he sees this on Monday, the impression may be too strong for his system.

Aspect ratio change from home (1.85) to 2.37 is now 15 seconds, a huge improvement, it is now a New Projector.

The 3-D benefits immensely from having this kind of razor sharp accuracy, tiny little people and objects are now a joy to see moving around in 3-D space, before it blended away.

If at anytime some moon of saturn prospective client wanted to see what they can do, Prometheus has never been this ready for inspection before.

Next we want to try a smart lamphouse and a bigger 3kw lamp,to boost the 3-D brightness while preserving the black levels at 2-D, that I will discuss next week after I get trained on it's operation in Moody Gardens.
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Old 01-26-2011, 01:07 PM - Thread Starter
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The projector comes with a few basic macros for a few standards.

96% of Barco users calibrate a rec 709 and watch it that way. Without starting to insult the majority, those ignorant !@#$%,

The beauty of owning these projectors specially with 3-D and the new Post series deep color offerings is to take advantage of the projector tools to maximize THE BLU-ray experience. Because of a wide range of mastering approaches one needs to rely on the projectors LUT 36 bit internal engine to address these variances, this is something best not done on a simple scaler.

We use someone very high in the Hollywood/Smpte look-up table expert community to model our lut's, there are many color professionals which have a good understanding of sigmoid and 3-D LUT's. When specifying a digital cinema projector to ignore that opportunity will be paid back with a rather flat dull looking but perfect rec 709. I am not marketing nothing or plugging anyone, in fact don't ask me; I will not divulge sources. I am pontificating to someone that buys a dci projecotor and under-utilizes the potential for maximum image quality.This past Monday and Tuesday I spent 48 hours watching the gold standard in 3-D cinema technolofies and 4k, it was glorious yet I couldn't help finding myself reaching for the AMX control to enhance the depth through custom lut macros. I could have made the best picture on earth aty least 50% better.

The attachments show how instead of 16 macros we are using already 56 macros at Prometheus, the next step is to create an equal amount of macros as for 2-D but for 3-D to add enhancement range to the pop out effect.



We will have to consolidate these new 96 macros in half because the next range of projectors in the P series will require expandable color gamuts of varying degrees. I sure hope Barco increases the maximum number of macros beyond 96.
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Old 02-09-2013, 03:42 AM
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Quote:
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Ditching Tact Audio for rs-20i!!!biggrin.gif
So you have a working Tact TCS for sale? biggrin.gif
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Old 11-17-2013, 05:53 PM - Thread Starter
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Old 11-23-2013, 03:26 PM
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I like the DCI Forum! Is it new? Excited for more posts on there. My usual cinema haunt is www.film-tech.com

JBL Pro Cinema
GO MANCHESTER UNITED!!
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