New Convergence Alignment Tool

Discussion in 'Archived Threads 2001-2004' started by Lando P, Aug 23, 2002.

  1. Lando P

    Lando P Agent

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    Has anybody had a chance to purchase and try out this new handheld convergence tool? If so, would appreciate your comments.
    http://www.gearslip.com/rpCat
    Thanks
     
  2. SteveA

    SteveA Supporting Actor

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    I don't think a tool like that would be very useful with sets (such as my Tosh 50H81) that already allow you to selectively turn off the 3 different guns during a convergence.
     
  3. Max Leung

    Max Leung Producer

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    Actually, I think this tool could be very handy, assuming the filters are of high quality. You can leave all the guns on, and note the RELATIVE position of a red or blue line with respect to the green line without the need of fiddling with the remote and squinting at the lines. AND you can check the thickness of the lines compared to another too, which would be handy when adjusting the focus trimpot controls.

    I have an idea! I wonder if you can use the Avia RGB filter strips instead...that would be great if you can use that instead of plonking down the $40 US for the rpCat.

    Either way, I can see the rpCat being useful for professional ISF calibrators who need to work with many different sets in a short period of time.

    Thanks for the link!
     
  4. Max Leung

    Max Leung Producer

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    I emailed their rpCat info email address. They are just starting to look into international shipping. Hopefully they'll have something in place soon so that us Canucks can get a hold of these things!
     
  5. Max Leung

    Max Leung Producer

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    Anyone know what happened to rpcat? The link doesn't work anymore.
     
  6. Jan Strnad

    Jan Strnad Screenwriter

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    Max,
    Mahatma Gandhi...woo! Did not see that coming! [​IMG]
    Jan
     
  7. JohnnyG

    JohnnyG Screenwriter

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    So what WAS this product, anyway?
     
  8. John Royster

    John Royster Screenwriter

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    I frequently use the AVIA filters to check convergence. Just tape all three together and view the convergence line. It should look dead straight on when running through the red, green, blue filter.

    |-red-|-green-|-blue-|------------------line.

    Rotate for vertical.
     
  9. Max Leung

    Max Leung Producer

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    The rpcat is/was supposed to be a square piece of thick plastic divided into quadrants, where each quadrant is an red, green, or blue filter. You place the rpcat over the convergence line to check its alignment relative to the other color on the same line, but above it.
    But, John's technique would work too! It's just not as cool looking. [​IMG]
    I wish I knew where that Mahatma Gandhi joke came from.
     

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