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Author Topic: DLP Resolution Question
Mark J. Marshall
Film God

Posts: 3188
From: New Castle, DE, USA
Registered: Aug 2002


 - posted 12-26-2004 02:30 PM      Profile for Mark J. Marshall     Send New Private Message       Edit/Delete Post 
quote: Darren Briggs
2K D-cinema resolution is 2048 x 1080 pixels.
What is the resolution of 1.3K?

Do we have an approximation of how many 2K projectors there are compared with 1.3K projectors?

Also, can 1.3K projectors be upgraded to 2K?

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Paul Konen
Jedi Master Film Handler

Posts: 981
From: Frisco, TX. (North of Dallas)
Registered: Jun 99


 - posted 12-26-2004 03:14 PM      Profile for Paul Konen   Email Paul Konen   Send New Private Message       Edit/Delete Post 
The 1K chip is 1280 x 1024.

You can get some analysis of the number you need by going to www.dcinematoday.com

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Steve Guttag
We forgot the crackers Gromit!!!

Posts: 12814
From: Annapolis, MD
Registered: Dec 1999


 - posted 12-26-2004 09:39 PM      Profile for Steve Guttag   Email Steve Guttag   Send New Private Message       Edit/Delete Post 
No, you can't upgrade a 1.3K system. The projector's are totally different as are the light engines.

The 1.3K machines tend to look like a projector hung at a 45-deg. angle on a conventional Cinema type console.

The 2K machines all tend to look more like a video projector desgined from the ground up with more of a pancake or sled appearance.

http://www.dcinematoday.com

Is a decent source for DCinema news.

Steve

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Mark J. Marshall
Film God

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From: New Castle, DE, USA
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 - posted 12-26-2004 10:20 PM      Profile for Mark J. Marshall     Send New Private Message       Edit/Delete Post 
Thanks for the info and the link guys.

It looks like it will be a cool site one day. At the moment, any time I click on anything, it takes me back to the default page. Hopefully they get it working soon.

Thanks again!

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Steve Guttag
We forgot the crackers Gromit!!!

Posts: 12814
From: Annapolis, MD
Registered: Dec 1999


 - posted 12-27-2004 12:01 PM      Profile for Steve Guttag   Email Steve Guttag   Send New Private Message       Edit/Delete Post 
Mark,

I believe you have to register to get beyond the home page.

Steve

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John Pytlak
Film God

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From: Rochester, NY 14650-1922
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 - posted 12-27-2004 01:26 PM      Profile for John Pytlak   Author's Homepage   Email John Pytlak   Send New Private Message       Edit/Delete Post 
The webmaster for the http://www.dcinematoday.com site is Bill Mead, formerly of Sony and prior to that, Dolby. [Smile]

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Mark J. Marshall
Film God

Posts: 3188
From: New Castle, DE, USA
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 - posted 12-28-2004 08:23 AM      Profile for Mark J. Marshall     Send New Private Message       Edit/Delete Post 
quote: Steve Guttag
I believe you have to register to get beyond the home page.
Ah. Guess it should probably say that somewhere. Thanks!
quote: Paul Konen
The 1K chip is 1280 x 1024.
So, wait... does that mean that for Star Wars, which is being shot with the HDC-F950 camera, the people who are dying to see it in digital, are going to see it in a lower resolution than it was shot if they see it on a 1.3K projector? Or am I missing something in my math?

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Steve Kraus
Film God

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From: Chicago, IL, USA
Registered: May 2000


 - posted 12-28-2004 09:58 AM      Profile for Steve Kraus     Send New Private Message       Edit/Delete Post 
Your math is correct. 1280 pixels is not as many as 1920. On the other hand 1024 in the vertical plane is more than the 800 (give or take a few) after the original is cropped to 2.39 aspect ratio. Likewise for d-cinema shows originating on film these numbers are less than 2K scans as well. So much for those certain idiot filmmakers who were claiming d-cinema was the only way to see all the image with all the pristine detail, even back when 1.3K was the only digital projector out there.

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Lyle Romer
Phenomenal Film Handler

Posts: 1400
From: Davie, FL, USA
Registered: May 2002


 - posted 12-28-2004 03:23 PM      Profile for Lyle Romer   Email Lyle Romer   Send New Private Message       Edit/Delete Post 
Has anybody (Kodak maybe) realeased any type of study of what resolution is needed to match 35mm film done right. I'm not talking about technical specs of lp/mm resolving power of film. Basically, if a well shot scope film (the most negative area for standard 35mm) is carefully and properly processed by the labs to make a high quality print presented with quality projection equipment by a professional projectionist, what resolution d-cinema is needed (resolution only, I'm discounting contrast and color in this hypothetical) so that the audience will get the same experience?

The reason I bring this up is that I went and saw the last star wars which was shot on lower than full HD resolution video and shown on the 1.3k DLP and it didn't look *THAT* bad. No, it didn't look as detailed as 35mm presentations normally do. Yes, I could see the pixel grid in very bright scenes. No, the skin tones weren't quite right. But, it did look a whole lot better than I expected given the resolution.

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Bobby Henderson
"Ask me about Trajan."

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From: Lawton, OK, USA
Registered: Apr 2001


 - posted 12-28-2004 10:37 PM      Profile for Bobby Henderson   Email Bobby Henderson   Send New Private Message       Edit/Delete Post 
I watched the same movie via a 35mm print. The live action digital video footage was noticeably soft compared to the 2K CGI effects. Obviously 1280 X 1024 doesn't get the job done adequately. 35mm projection "done right" will surpass the detail capability of a 2K DLP system.

It will be interesting to see how well Sony's upcoming demonstration of a 4K-based digital projection system will perform.

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Jesse Skeen
Phenomenal Film Handler

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From: Sacramento, CA
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 - posted 05-15-2005 02:21 AM      Profile for Jesse Skeen   Email Jesse Skeen   Send New Private Message       Edit/Delete Post 
I finally first saw my first DLP movie today (Hitchhiker's Guide to the Galaxy) at AMC in Emeryville. PLEASE tell me it doesn't always look like this!! I thought the contrast and everything were OK, but what killed it for me was the screen-door effect. It was painfully obvious during the scenes in the spaceship where almost everything is white, and also anytime lettering appeared on the screen- the end credits especially looked like video projection, not film! They showed the Star Wars trailer which looked OK (though hard to notice anything with all the quick cutting, plus the house lights were up during the trailers) but the "Coming Soon" tag at the end had the same problem as everything else. The only good thing I can say is that there were no changeover cues!
[fu] to whoever had a light or something on upstairs that shined a circular pattern on the screen, AND put a nice smear on the port glass resulting in a dark spot on the screen as well!
[fu] [fu] also for showing a bunch of commercials while charging $10 per ticket, AND for having the top masking come down at the start of the movie (so we got a bigger screen for all those precious commercials then had it shrink for the actual movie.) They were shown on a lower-resolution digital projector that was very painful to watch- the DLP was much less subtle but the screen-door effect was still there.

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Steve Guttag
We forgot the crackers Gromit!!!

Posts: 12814
From: Annapolis, MD
Registered: Dec 1999


 - posted 05-15-2005 10:10 AM      Profile for Steve Guttag   Email Steve Guttag   Send New Private Message       Edit/Delete Post 
Another thing that goes beyond just resolution seems to be that when a film is shown digitally...it gets a most 2D appearence. All of the depth of the shot is gone and it looks quite flat.

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John Hawkinson
Film God

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From: Cambridge, MA, USA
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 - posted 05-15-2005 12:54 PM      Profile for John Hawkinson   Email John Hawkinson   Send New Private Message       Edit/Delete Post 
Any theories as to why that is the case, Steve? I've only watched digital projection a handful of times, but I haven't noticed that effect...

--jhawk

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Gordon McLeod
Film God

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From: Toronto Ontario Canada
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 - posted 05-15-2005 01:56 PM      Profile for Gordon McLeod   Email Gordon McLeod   Send New Private Message       Edit/Delete Post 
I always put that down the the contrast ration and colour pallet involved

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Jesse Skeen
Phenomenal Film Handler

Posts: 1517
From: Sacramento, CA
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 - posted 05-15-2005 02:30 PM      Profile for Jesse Skeen   Email Jesse Skeen   Send New Private Message       Edit/Delete Post 
This seemed to be inherent in the projector itself though, since the trailers had the same problem. I've never gotten to play with one of these, are there any adjustments that can be made to get rid of it?
I don't want to write off DLP just yet since the first time I saw DVD in a store it looked awful, but I've been mostly pleased with it at home. I'm wary of DLP being able to equal film done right however, though the way most places do film these days it'll probably look better to most people.

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