What is proper screen distance?

Discussion in 'Displays' started by Torgny Nilsson, Dec 3, 2003.

  1. Torgny Nilsson

    Torgny Nilsson Second Unit

    Joined:
    Jan 8, 2003
    Messages:
    255
    Likes Received:
    1
    What, exactly, is the proper distance to sit from your screen? I have seen a lot of people say that if you have a 60 inch screen, you should sit about 90 inches away from it. I assume that calculation is based on a 60 inch diagonal screen, and not a 60 inch wide screen.

    But the THX recommended distance, and the distance recommended by others, is for a screen that fills more of your view, thus requiring you to sit closer to the screen than the 1.5 calculation.

    Which is right? What is the best size screen for me to get if people will be sitting between 7 and 10 feet away from the 16:9 screen? And what if I am showing a 4:3 classic movie in its orignal aspect ratio? Should I move the seats closer?

    Any help would be appreciated.
     
  2. Torgny Nilsson

    Torgny Nilsson Second Unit

    Joined:
    Jan 8, 2003
    Messages:
    255
    Likes Received:
    1
    Yes, I am planning on running 16:9 on a 4:3 screen. It seems to give you the best size when watching 4:3 movies and does not reduce your picture much over a 16:9 screen when you watch 16:9 movies.
     
  3. Michael TLV

    Michael TLV THX Video Instructor/Calibrator

    Joined:
    Mar 16, 2000
    Messages:
    2,909
    Likes Received:
    1
    Location:
    Calgary, Alberta
    Real Name:
    Michael Chen
    Greetings

    4 to 6 times image height for interlaced displays and 1 to 3 times for HD displays for HD images.

    Regards
     
  4. Torgny Nilsson

    Torgny Nilsson Second Unit

    Joined:
    Jan 8, 2003
    Messages:
    255
    Likes Received:
    1
    If I understand this correctly, I should sit 4-6 times the image height away from an LCD or DLP screen. So if the image on my screen is 3 feet high, I should sit 12-18 feet away?
     
  5. Ron-P

    Ron-P Producer

    Joined:
    Jul 25, 2000
    Messages:
    6,283
    Likes Received:
    0
    Real Name:
    Ron
    My screen has a viewable area of 80" diagonal (6' x 3.5' roughly). My front row (which I prefer) is 9' from the screen. That's about 1.35x's the screens width or 3x's the screen's height. My back row is 12' from the screen, 1.8x's the screen's width or 4x's the screen's height.

    IMO, 12' is bordering on too far, 18' would be way to far. I have a Panny 200u LCD PJ.


    Peace Out~[​IMG]
     
  6. Michael TLV

    Michael TLV THX Video Instructor/Calibrator

    Joined:
    Mar 16, 2000
    Messages:
    2,909
    Likes Received:
    1
    Location:
    Calgary, Alberta
    Real Name:
    Michael Chen
    Greetings

    The rule for HD is such that sitting further away diminishes the need for higher resolutions ...

    At 1 to 3 times, you can enjoy the 1400 line detail of the HD image that your TV gives you. But at 5 times ... then you only see the detail as a 1100 line HD image would give you. So you would have wasted the money for that extra resolution ...

    The numbers are arbitrary ... but you get the idea.

    For progressive 480 images ... sit as close as you want but at a certain distance, you stop seeing additional details. Too close and you see the line structure ...

    Regards
     

Share This Page