LCD RP any general tips?

Discussion in 'Displays' started by John S, Mar 28, 2005.

  1. John S

    John S Producer

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    Wednessday night will be my first time charged with setting up and tweaking a really large LCD RP display.

    Any and all expeirences and comments will be appreciated.

    Display in question is a Panasonic 60" PT-60LC14 LCD RP by the way....
     
  2. Michael TLV

    Michael TLV THX Video Instructor/Calibrator

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    Greetings

    Keep an eye out for both white crush and discoloration of the grayscale when setting contrast.

    Grayscale will not be anywhere close to linear on this type of set ...

    Regards
     
  3. John S

    John S Producer

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    So set the contrast where the Greyscale seems most accurate, and use White crush as the measure for the Black level? In other words, I will / should have my best black level, by setting it right at white crush or just a hair below it correct?

    Sounds reasonable, and thanks a million... [​IMG]
     
  4. Michael TLV

    Michael TLV THX Video Instructor/Calibrator

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    Greetings

    Actually not. [​IMG] Use the typical patterns for setting black levels ... and use the grayscale sweep pattern for determining the optimal contrast setting.

    The white crush test in the sweep is the upper limit of the contrast setting test. Often, just setting it short of the crush will still introduce a lot of discoloration in the grayscale sweep which is also really bad. So you have to take contrast further down to find that "happy" spot with the least discoloration. Once you find this ... then redo brightness again.

    Regards
     
  5. John S

    John S Producer

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    OK.. That makes much more sense.. Thanks again on it.
     

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