How Digital Cinema Works
DistributionFor the business side of the movie industry, the most compelling aspect of digital cinema is distribution. In today's system, production companies spend a lot of money producing film prints of their movies. Then, working with distribution companies, they spend even more money shipping the heavy reels of film to theaters all over the world, only to collect them again when the movie finishes its run.
Because the distribution costs are so high, production companies have to be extremely cautious about where they play their movies. Unless they have a sure-fire hit, they take a pretty big risk sending a film to a lot of theaters. If it bombs, they might not make their money back.
If you take the physical film out of the equation, things get a lot cheaper. Digital movies are basically big computer files, and just like computer files, you can write them to a DVD-ROM, send them through broadband cable or transmit them via satellite. There are virtually no shipping costs, and it doesn't cost the production company much more to show the movie in 100 theaters than in one theater. With this distribution system, production companies could easily open movies in theaters all over the world on the same day.
The digital distribution system also helps out the individual theaters. If a movie sells out, a theater could decide to show it on additional screens on the spur of the moment. They simply connect to the digital signal. Theaters could also show live sporting events and other digital programming.
Projection
TO the audience, the most important aspect of digital cinema is the projection system. This is the final piece of technology that controls how the movie actually looks at the end of the line.
Pretty much everybody agrees that a good film projector loaded with a pristine film print produces a fantastic, vibrant picture. The problem is, every time you play the movie, the film quality drops a little. When you go to a movie that's been playing for a few weeks, you'll probably see hundreds of scratches and bits of dirt.
Many critics hold that a projected digital movie is inferior to a pristine film print, but they recognize that while a film print gradually degrades, a digital movie looks the same every time you show it.
Think of a CD as compared to an audio tape. Every time you play an audio tape, the sound gets a little warped. A CD's digital information sounds exactly the same every time you listen to it (unless it gets scratched).
READ MORE…by Tom Harris
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