my profile | my password | search | faq & rules | forum home

» Film-Tech Forum ARCHIVE   » Operations   » Digital Cinema Forum   » Non Ghost Buster or Ghost Buster (Page 1)

This topic comprises 2 pages: 1  2

Author Topic: Non Ghost Buster or Ghost Buster Desiderio Garcia Ramirez Film Handler Posts: 2 From: Malaga / Spain Registered: Oct 2003 posted 11-26-2009 03:12 PM                       Hi all. I´ve a question about Master Image 3D. Is Master Image "Non Ghost Buster" o "Ghost Buster"? Thanks  |  IP: Logged Chris Slycord Film God Posts: 2986 From: 퍼항시, 경상푹도, South Korea Registered: Mar 2007 posted 11-26-2009 04:06 PM                     As far as I remember, the only system that needed a "Ghost-Busted" file is RealD.  |  IP: Logged Julio Roberto Jedi Master Film Handler Posts: 938 From: Madrid, Madrid, Spain Registered: Oct 2008 posted 11-26-2009 04:50 PM                    It's "up to you". If your Master Image installation has very little ghosting (i.e. a "good" silver screen, clean filters and porthole glass, good glasses, etc) you can use the non-ghostbusted version just fine. The system with worse ghosting performance is Real-D and the only one that "really" needs it. The others "benefit" from it too if they are displaying too much ghosting, but this shouldn't happen, specially with systems like Dolby which are 10x less proned to ghosting than RealD. MI would be similar in crosstalk (ghosting) performance to Sony 3D or Imax 3D, which are all better than RealD, but still can ghost a little, specially with some setups/movie scenes.  |  IP: Logged John Wilson Film God Posts: 5438 From: Sydney, Australia. Registered: Dec 1999 posted 11-26-2009 04:57 PM                     Desiderio, welcome to Film-Tech. We need you to please put your posts in the correct forum. All Digital Cinema posts need to go in the 'Straight To Video' forum. The film guys get shitty seeing non-sprockety type posts in the sprockety-type forum. Thanks.  |  IP: Logged John Wilson Film God Posts: 5438 From: Sydney, Australia. Registered: Dec 1999 posted 11-26-2009 09:35 PM                     See? (moved)  |  IP: Logged Desiderio Garcia Ramirez Film Handler Posts: 2 From: Malaga / Spain Registered: Oct 2003 posted 11-27-2009 10:04 AM                       We projeted FINAL DESTINY4 and it had a very high ghosting that we haven't see in other movies. All the DCP that we receive are NGB and MI recommends NGB, but FOX in Spain provides his MI´s DCP by GB ¿? Thanks for everything  |  IP: Logged Brendan Penny Expert Film Handler Posts: 121 From: Bundoora, Australia Registered: Dec 2008 posted 11-27-2009 03:38 PM                     Master Image does not require any ghost busting.  |  IP: Logged Louis Bornwasser Film God Posts: 4441 From: prospect ky usa Registered: Mar 2005 posted 11-30-2009 09:06 AM                        That's right and less money as well. Louis  |  IP: Logged Mark Gulbrandsen Resident Trollmaster Posts: 16657 From: Music City Registered: Jun 99 posted 12-03-2009 06:32 PM                     And either type of file will play back just fine... I believe with Dolby also!  |  IP: Logged Pete Naples Phenomenal Film Handler Posts: 1565 From: Dunfermline, Scotland Registered: Feb 2001 posted 12-04-2009 06:42 AM                     Correct Dolby does not require ghostbusted content, but will happily play it. The Stereoscopic Addendum to the DCI spec pretty much says if any one system requires ghostbusting, that's a no no.  |  IP: Logged Mark Gulbrandsen Resident Trollmaster Posts: 16657 From: Music City Registered: Jun 99 posted 12-04-2009 09:11 AM                     quote: Louis Bornwasser That's right and less money as well. Louis Louis, M.I. is or was in the 30K ballpark last time I installed one... DTS was working at getting the price down a bit more. Dolby is a little over half that without sterilization machine and glasses... the cleaning machine can be had for in the $3500 ballpark if you shop around but it's wise to still get the racks from Dolby's reccomended source. Then the number of glasses you ultimately initially purchase determines the final initial cost of the Dolby. They are about 30 bucks a pair and last 450 cycles. The glasses per cycle are at about .07 and a cleaning cycle (in Casper, WY) costs them .05 total cost... .12 is alot less cost than a pair of polarized glasses cost from M.I. which were running .75 a pair when purchased in about 1000 quantity. So in the long run Master Image actually costs more. I happen to like M.I.s simplicity and movability but there is also the need to clean the filters on the nipkow disk at least bi-weekly with a micro fibre rag... If you don't clean it eventually it gets so full of stuff that you no longer have 3-D. Proper popcorn ventallation is almost mandatory, one might also want to consoder filtered booth air if you're installing M.I., where the Dolby wheel is already in filtered air, at least in most projectors. One thing is for certain... these will ultimately become the most expensive booth doorstops in Cinema history! Mark  |  IP: Logged Steve Guttag We forgot the crackers Gromit!!! Posts: 12814 From: Annapolis, MD Registered: Dec 1999 posted 12-04-2009 11:53 AM                     I dunno about that...what was the price of the 4-track mag system in the '50s? And what would that be in 2009 dollars? Then again, it could be argued that 4-track mag had a 30-year run (more or less)...digital audio on film is only in its 17th year or so. Steve  |  IP: Logged Mike Schindler Phenomenal Film Handler Posts: 1039 From: Oak Park, IL, USA Registered: Jun 2002 posted 12-09-2009 12:14 PM                     Can someone explain exactly what ghostbusting does? I understands that it cuts down on ghosting, but how does it do that? And why is it preferable not to use it when possible?  |  IP: Logged Julio Roberto Jedi Master Film Handler Posts: 938 From: Madrid, Madrid, Spain Registered: Oct 2008 posted 12-09-2009 04:53 PM                    In short: "ghostbusting" is the name of a technique that analyzes the pixels in a frame pair (two consecutive frames of the 48fps stream, each one representing the view from each one of the left and right eyes) and if it finds too much contrast in a pixel-pair corresponding to each image that overlap in the same point of the screen, it reduces the contrast usually by darkening the affected pixel(s) from one of the views. You can think of it as a "smart, partial contrast reduction" function. As a result, one of the views (from the eye pair, usually the left one), gets "distorted" with "spurious" dark(er)/bright(er) spots here-and-there. So you don't wanna use the ghostbusting if you don't have to. But if your system produces too much ghosting, well, it's the lesser of two evils. RealD zscreen does NOT have the sufficient polarizing performance to adequately produce a ghost-free image in a wide variety of situations, and thus, the "ghostbusting" is almost "mandatory". Remember that studios are to stop producing ghost-busted versions of the films as the ghostbusting function is now being done on-the-fly by most servers out there automatically when you choose RealD as the 3D system in use (or activate it otherwise in the menu).  |  IP: Logged Jack Theakston Master Film Handler Posts: 411 From: New York, USA Registered: Sep 2007 posted 12-09-2009 05:09 PM                     quote: Steve Guttag I dunno about that...what was the price of the 4-track mag system in the '50s? And what would that be in 2009 dollars? According to a couple of breakdowns that I've seen from 1954, the going price was $1,500 for a set of penthouses and amps, which would be close to $12,000 today. Wiring and extra speakers could cost an extra $2,000.  |  IP: Logged

All times are Central (GMT -6:00)

This topic comprises 2 pages: 1  2

Printer-friendly view of this topic

Hop To: Select a Forum: Category: Operations -------------------- Digital Cinema Forum Film Handlers' Forum Large Format Forum Ground Level Feature Info, Trailer Attachments & REAL Credit Offsets Category: Community -------------------- Film-Yak Film Handlers' Movie Reviews The Afterlife Bob Maar's Joke-A-Thon Category: Classified -------------------- Equipment and Supplies Wanted/For Sale Help Wanted/Seeking Employment Category: System -------------------- Software Beta Testing Forum

The Film-Tech Forums are designed for various members related to the cinema industry to express their opinions, viewpoints and testimonials on various products, services and events based upon speculation, personal knowledge and factual information through use, therefore all views represented here allow no liability upon the publishers of this web site and the owners of said views assume no liability for any ill will resulting from these postings. The posts made here are for educational as well as entertainment purposes and as such anyone viewing this portion of the website must accept these views as statements of the author of that opinion and agrees to release the authors from any and all liability.