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Thread: Perez

  1. #41

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    The Kodak PhotoCD used a very clever (and complex) color encoding and then compression scheme. See http://www.kodak.com/global/en/profe.../pcd-045.jhtml

  2. #42
    Mustafa Umut Sarac's Avatar
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    Its not a 32 bit YUV. A lot of color information throwen and they try to cheat the senses with lack of ability to act right. Unless British , German and Nordic people are not happy with HD channels and they want improvement when it is the best system at satellite and expensive.
    16 megapixel - 48 megabyte story is interesting. BBC dont allow to air a scene shot by a cameraman at with least 50 megapixel and there is a backward quality worse than 30 years ago colors.

  3. #43

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    Quote Originally Posted by Tom1956 View Post
    Advertising. Primetime TV (what there still is of it), and AM radio. Although I don't generally listen to much of it myself, I wonder what kind of film sales could generated on the Dash Limburger program, for instance. Or some network TV presentation. Do you realize the average 21 year old doesn't know what film is? My point is, film doesn't have to die like this.
    the post exposure infrastructure has been nearly dismantled ...

  4. #44

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    Quote Originally Posted by Mustafa Umut Sarac View Post
    BBC dont allow to air a scene shot by a cameraman at with least 50 megapixel.

    Given that 1080 HDTV is only 2.1 megapixels, I can't imagine why they would set such a standard.

    Note that for digital cinema: "In digital cinema, resolutions are represented by the horizontal pixel count, usually 2K (2048×1080 or 2.2 megapixels) or 4K (4096×2160 or 8.8 megapixels)."

  5. #45
    Mustafa Umut Sarac's Avatar
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    May be it is for 24 frame and each frame covers 2.1 megapixel, I dont know. There is lots of discussions at bbc blogs.
    You are the expert , let me add they try to air 35 megahertz grid without problem and no success. This is for 1920 line
    plasma monitör.

  6. #46

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    Quote Originally Posted by Mustafa Umut Sarac View Post
    May be it is for 24 frame and each frame covers 2.1 megapixel, I dont know. There is lots of discussions at bbc blogs.
    If they are talking about 16-bit/color resolution, then each pixel would be represented by 6 bytes. If the 50 represents megaBYTES, then (50 megabytes)/(6 bytes/pixel)=8.4 megaPIXELS which would be approximately correct for 4K digital cinema.

  7. #47
    Mustafa Umut Sarac's Avatar
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    let me find the links and blogs. give me one hour or less.

    by the way , you can Google at this time span , bbc accepted cameras.

  8. #48
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    Fred, lost in all of this is the fact that digital introduces aliasing whereas film has none. And film does not produce jagged lines in diagonals.

    PE

  9. #49

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    Quote Originally Posted by Photo Engineer View Post
    Fred, lost in all of this is the fact that digital introduces aliasing whereas film has none. And film does not produce jagged lines in diagonals.

    PE
    Aliasing - you must always consider the Nyquist-Shannon criteria when sampling to avoid aliasing.

    Film doesn't have 'jagged lines' but it does have grain clumps.

  10. #50

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    A Google search points to a requirement of "capture footage at 50Mbps". This has nothing to do with the video image size.

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