Dismiss Notice
Attention AVForums app / Tapatalk users
Sadly GDPR means that, from 25th, we can no longer offer access to AVForums via the branded app or Tapatalk.
Click here for more information.

Projecting a Small Image

Discussion in 'Projectors, Screens & Video Processors' started by Nickyrboy, May 15, 2005.

  1. Nickyrboy

    Nickyrboy
    Standard Member

    Joined:
    Feb 25, 2005
    Messages:
    71
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    11
    Location:
    Bristol
    Ratings:
    +1
    As CRT projectors age and the tubes became not as bright as they once were is it possible to greatly reduce the projected image size and increase brightness. I have a Sony 1040QM currently projecting a 100" image but it's not what it once was, if i make my image significantly smaller by moving the projector closer to the screen (and obviously setting it up again) will the image get brighter or am i barking up the wrong tree.

    Nick
     
  2. Godfather

    Godfather
    Active Member

    Joined:
    Feb 12, 2001
    Messages:
    2,345
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    63
    Location:
    Edinburgh
    Ratings:
    +225
    You're not barking up the wrong tree. The same projector firing onto a smaller screen will produce a brighter more punchy image. So I think it's worth trying if you want to squeeze a little more life out of your projector.
     
  3. Roland @ B4

    Roland @ B4
    Active Member

    Joined:
    Apr 11, 2001
    Messages:
    2,238
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    51
    Location:
    Reading.
    Ratings:
    +32
    Inverse square law.
    If I recall half the projected distance and you will get 4 time the amount of light
     
  4. bxd

    bxd
    Active Member

    Joined:
    Oct 17, 2001
    Messages:
    1,487
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    66
    Location:
    Southampton
    Ratings:
    +134
    Hi,

    While the Sony 10xx projectors will go up to 100-250in, they are probably at their best with a 72in (4:3) set up. Remember that you'll have to adjust the lens 'spacer' rings and the tube spacers from 100 to 72in.

    Brian
     

Share This Page

Loading...
  1. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
    By continuing to use this site, you are consenting to our use of cookies.
    Dismiss Notice