Difference between: Avia and ISF calibration?

Discussion in 'Archived Threads 2001-2004' started by Antonio_B, Jan 6, 2003.

  1. Antonio_B

    Antonio_B Stunt Coordinator

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    hi all,how are you?
    I would like to know what's the difference between an Avia calibration and an ISF calibration.
    Thanks in advance!!!
     
  2. Brian Harnish

    Brian Harnish Screenwriter

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    Antonio- An Avia calibration generally consists of user and minor service level adjustments including: Brightness, contrast, sharpness, and other similar adjustments. An ISF calibration goes much deeper than Avia: Grayscale (which cannot be accomplished with Avia alone), and other adjustments are made to create the most accurate picture. Such an accurate picture cannot be obtained by a simple Avia calibration.
     
  3. Neil Joseph

    Neil Joseph Lead Actor

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    Neil Joseph
    Simply put, AVIA or other calibration disks allow the user to calibrate using external controls whereas an ISF calibration goes much deeper, using internal and/or service menu controls.
     
  4. Michael TLV

    Michael TLV THX Video Instructor/Calibrator

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    Greetings

    Three levels to calibration.

    Level One ... AVIA/VE test disc stuff. Sets user controls for optimum settings. Nothing more. But with knowledge and willingness to explore can do more geometry work with these discs to center picture ... take care of overscan ...

    Level Two ... ISF calibration. Takes the AVIA stuff and adds onto it by working on the one important component that the disc could not help you do. ISF is about getting the grayscale right. Making sure your blacks are black and your whites are white. You need to use expensive instrumentation to get this done correctly.

    Level Three ... Full Video Calibrationist Calibration. The stuff that the calibrators that hang out here do. Take levels 1 and 2 and add onto that a lot of physical work with the TV focus and geometry and convergence amongst other things to get even more out of your set. Case in point ... proper colours and grayscales mean nothing if your picture is out of focus.

    Regards
     

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