Color Blind ! Help!!!

Discussion in 'Archived Threads 2001-2004' started by Paul_Saul, Mar 23, 2002.

  1. Paul_Saul

    Paul_Saul Stunt Coordinator

    Joined:
    Nov 6, 2001
    Messages:
    115
    Likes Received:
    0
    Trophy Points:
    0
    I recently had a chance to do a side by side comparison of an Optoma 755 and a Panasonic 711XU. To make it a far comparison I did a quick and dirty calibration with video essentials. The problem was that when the input to these projectors came from a computer (I had the V.E. DVD in the salesman's portable pc) the color and tint controls on both projectors were disabled!!! (note the cpu to projector connection was via a VGA cable).

    We switched to a DVD player and an S-video connection to the projectors and the color and

    tint controls were back.

    I want to use an iScan Pro for my sole connection to the projector (480p). I have been in contact with someone who is using the iScan Pro with an Optoma projector.

    They confirm that the color and tint controls

    are disabled while doing this. I suspect that

    many projectors (not just Optoma and Panasonic) behave this way. I realize that

    the iScan Pro has a color control (but no

    tint), so finally my question is...

    How do you properly calibrate the color and hue/tint for projectors? Is the iScan's color control enough?

    Please help....
     
  2. Christian Dolan

    Christian Dolan Stunt Coordinator

    Joined:
    Nov 26, 2001
    Messages:
    107
    Likes Received:
    0
    Trophy Points:
    0
    Paul,

    It’s common to have these adjustments disabled for RGB inputs. They intend for you to do all tweaking with the R, G, and B controls.

    Besides, you don’t have tint issuses, since these only apply when you have modulated both R-y and B-y signals onto a common sub-carrier signal, as in composite and S video.

    -Christian
     
  3. Paul_Saul

    Paul_Saul Stunt Coordinator

    Joined:
    Nov 6, 2001
    Messages:
    115
    Likes Received:
    0
    Trophy Points:
    0
    Thanks. But what if the projector is DLP - it doesn't

    have separate RGB controls.
     

Share This Page