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This topic comprises 3 pages: 1 2 3
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Author
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Topic: RealD Shares Collapse to All-Time Low, Lose Nearly 21% of Value
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Frank Angel
Film God

Posts: 5305
From: Brooklyn NY USA
Registered: Dec 1999
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posted 08-02-2011 06:01 AM
Wow, Steve, that is really shocking; I was almost going to say that it seems that Hollywood has set exhibition backwards in order to push 3D as its savior and has done it without any consideration for the palpable, negative impact it has on image quality. It seems like, except maybe for IMAX Digital 3D, "standard" one projector digital 3D was terribly conceived and, worse, they don't seem to care but just keep pushing ahead, to a cinema experience of possibly LESS quality than home theatre.
For most of its history, cinema technicians, researchers, inventors, have mostly labored to make film presentation BETTER. Innovations rarely were designed to DEGRADE presentation, except for that one foray into mediocrity when UA and Technicolor teamed up to diabolically hoist the 3 sprocket frame "long play" print on us in order to save on shipping costs and print-to-platter labor. Luckily that went nowhere. Little did we know they had their sights on a much bigger prize -- getting exhibition to save them money by installing digital. And I may be cynical here, but I truly believe the REAL reason 3D is being pushed so hard, regardless of its impact on screen image quality, is solely to expedite a speed-up of digital conversions; they rushed to 3D with what seems like terribly little regard for quality.
At least in the 50s, the second eye was an additive process for both brightness and I would guess at least the perception of better resolution; it certainly didn't REDUCE resolution. The 80s system wasn't nearly as good, but then again, at least both eyes saw the image at the same time and its run was mercifully short.
And believe me, this is hard for me to say as this lad simply LOVES 3D; I have seen both dual projector film 3D and dual projector digital IMAX 3D -- both are additive systems they result in a 3D image Done Right (I've yet to see Dolby 3D). Unfortunately, given the pervasive use of ReadD, me thinks we are going to be stuck with this inferior system for a long time. Hell will freeze over before exhibitors install a SECOND projector for high quality 3D presentation.
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Frank Angel
Film God

Posts: 5305
From: Brooklyn NY USA
Registered: Dec 1999
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posted 08-02-2011 08:41 AM
Brad, you don't offend -- but, you do misread me sometimes. What I criticize in the post above is specifically RealD THREE DEE, NOT digital. And I base the criticism on how it screws with resolution and brightness. So let's just set the record straight, I have no grip with digital -- haven't for a long time since I have seen how good it can look when it's done well. I don't know how many ways I can say it. Digital is here; it's the way commercial cinema will be shown and when it is done well -- again I point to IMAX digital, both 2D and 3D, which I have said over and OVER, looks quite stunning -- it certainly does the job.
But given what I have seen of single projector RealD 3D, I and lots and lots of people say it produces lifeless, dull images, especially in the theatres where it seems they try to get pictures bigger than they should, or the system they installede is undersized. I think even you will admit that there can be digital done wrong just like there's film done wrong.
Then comes Steve's eye-opening numbers which tell how resolution takes such a big hit by the RealD system, it is clear to me that Hollywood rushed into 3D without carefully evaluating if they could actually produce a decent 3D image. And what is worse in my mind is that they seem to have rushed into 3D specifically to motivate exhibitors to jump to digital to save THEM money, NOT because it is a particularly good system.
And yes, I do want to find a Dolby 3D screen to check that out. It probably won't be too hard for it to look a lot better than RealD 3D.
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Bobby Henderson
"Ask me about Trajan."

Posts: 10973
From: Lawton, OK, USA
Registered: Apr 2001
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posted 08-02-2011 02:32 PM
Digital cinema prints are superior to home HD in a number of specific ways.
The color depth in a DCP is greater than anything you can watch via broadcast, cable or Internet download/streaming. Blu-ray has deep color capability, but to the best of my knowledge no movie releases have used it yet. More emphasis is being placed on Blu-ray 3D.
Digital cinema prints usually use far less data compression than the HD video encodes for Blu-ray. And Blu-ray typically has far greater video bit-rate bandwidth than any other form of home HD anyone can watch. However, certain studios (Warner Bros.) needlessly squeeze compression ratios to severe levels on their DCPs. One studio's 2 hour movie DCP may weigh well over 200GB while a DCP from Warner may be only 50GB. Of course Warner Bros. maintains the "let compress the hell out of it" policy on other mediums. So the Blu-ray version of a given movie is going to be even more compressed, probably squeezed enough to where the movie and all the extras could fit on a 30GB HD-DVD disc. Did anyone tell WB the HD-DVD format was dead already? Maybe they didn't get the memo.
Digital Cinema Prints really consist of a huge number of still image files encoded in JPEG 2000 format. Each movie frame is a separate, discrete, still image. That's not the case for the various video compression formats used for Blu-ray, HDTV broadcast, Internet streaming, etc. They all take various kinds of short cuts to squeeze file sizes smaller and smaller. That includes repeating pieces of certain imagery across multiple frames.
There's a number of other technical rules regarding the creation of DCI compliant digital cinema prints, some of which I wonder if Warner Bros. has broken to make their DCP's a lot smaller than those from other studios. For instance there is a rule about a limit of transform blocks allowed. When we see something macro-block all to hell on something heavily compressed it's pretty obvious the video is using a large number of transform tiles. A DCP is supposed to be limited to only 3 transform tiles per frame and the master can have only 1. I don't know if that rule is still valid. Maybe some bean counters came in and talked about how much money would be saved if the standards lightened up a bit.
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