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This topic comprises 6 pages: 1 2 3 4 5 6
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Author
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Topic: Film v Digital - Differences in Presentation Standards
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Jim Cassedy
Phenomenal Film Handler

Posts: 1661
From: San Francisco, CA
Registered: Dec 2006
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posted 10-07-2014 04:42 PM
quote: Frank Angel how does that small little band of white with the ruffles on it get there?
I don't know, Frank, but I had always noticed that on "real" IB-Tech prints, the change-over 'lab dots' were always more like little 'stars' and had an 'edge color' border around them. It probably made them more obtrusive to the patrons, but almost impossible to miss as a projectionist, unless you just happened to sneeze or blink at that moment. Oh, how I miss them. . . . .
I do recall reading once, somewhere, how Technicolor did this, but, unfortunately, I don't remember any of the details.
LOOK:  (an image I found online)
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Bobby Henderson
"Ask me about Trajan."

Posts: 10973
From: Lawton, OK, USA
Registered: Apr 2001
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posted 01-28-2015 02:05 PM
In my experience d-cinema has brought up the bottom level of movie theaters to much improved standards, but it has been an obvious step backwards in theaters that were already doing a good job with film projection.
Locally, d-cinema gear has made it tolerable for me to see a movie at the 12-plex in our mall here. However, presentation quality still isn't top notch.
Others have rightly pointed out that d-cinema is not idiot proof. Theaters that were making silly mistakes in film presentations can be counted on for goofs with digital.
My biggest complaint about digital -where it has been a step backwards: image quality.
The image may be totally steady and debris free. But it isn't sharp. With things dialed out of focus, perhaps on purpose, what difference does it make if the projector is 2K or 4K? I have to watch something on freaking Blu-ray at home if I want to see a crisp, sharp looking image.
For example, I've visited Harkins' Cine Carpi theater in Oklahoma City several times, including a few visits before the switch to digital. The booth used to have a very good Kinoton 35mm projector that threw pretty sharp looking images on a 70' wide screen (my only complaint was the images were a tad bit dim; something that would be solved with 5/70mm projection). With digital this same theater is showing imagery that isn't nearly as sharp. I strongly doubt they've cut corners. The house is equipped with Dolby Atmos. It's one of Harkins' showcase auditoriums.
quote: Marcel Birgelen Missing channels isn't something new, most people will only start complaining if the center channel drops dead... Also, ever tried to convince some lowly cinema staff some channel isn't working?
I've been through this before, at a freaking brand new movie theater no less. The 7.1 surround sound was loud and dynamic, just no center channel.
quote: Martin McCaffery And thanks to digital it will stay out of focus until someone has a technician come in and refocus, which probably means forever (in DCP lifetimes). No chance of accidentally getting it in focus.
I think a lot of digital-based movie theaters have the picture shifted out of focus deliberately. I'm sure some of it has to do with trying to hide that crude, electronic looking pixel grid. It also probably has to do with battling moiré created by the dot pattern of the perforated screen and pixel grid pattern from the projector (film obviously never had this problem). And then it also comes down to the quality of optics on the projector.
I haven't priced any d-cinema projector lenses, but just looking at the glass of some of these zoom lenses I imagine some of them must be very expensive. So I also image there are opportunities where the theater can cheap out and get a lesser quality, softer looking projection lens. If they're deliberately trying to hide the pixel grid or just eliminate moiré then what's wrong with saving some bucks on glass? By the way, lower quality lenses can introduce chromatic aberration, such as green and purple fringing on high contrast edges. This might be what some are seeing in regard to "convergence issues".
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