testing a dlp projector

Discussion in 'Projectors, Screens & Video Processors' started by eyeoforion, Aug 23, 2006.

  1. eyeoforion

    eyeoforion
    Guest

    Products Owned:
    0
    Products Wanted:
    0
    Ratings:
    +0
    just wondered what i should do to tests drive a dlp projector in a dealers demo to ensure that i am not susceptible to the rainbow effect. Is there any particular video sequence which will bring it out for me to see???
     
  2. cyberheater

    cyberheater
    Well-known Member

    Joined:
    Apr 3, 2003
    Messages:
    3,230
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    86
    Location:
    Scotland
    Ratings:
    +188
    Yep. Take Starwars EP2 DVD along and enter the THX menu screen and navigate to the aspect ratio images of a black background and a white circle in the middle. Move your eyes a bit. If you see rainbows then your susceptible.

    It has to be said that I do see them using this techique but never see them in an actual movie.
     
  3. metallic

    metallic
    Active Member

    Joined:
    Dec 1, 2004
    Messages:
    100
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    21
    Ratings:
    +20
    Actively looking for rainbows in this way will almost guarantee that anyone will see them. As you say you don't see them when watching films which is what is important. I would recommend just watching some material that you are familiar with and don't try to force youself to see rainbows.

    If DLP doesn't agree with you then I would think it would be obvious without having to make yourself have problems with it. Personally I occassionally catch a glimpse of a rainbow during a dark scence but other than that I never have a problem.
     
  4. cyberheater

    cyberheater
    Well-known Member

    Joined:
    Apr 3, 2003
    Messages:
    3,230
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    86
    Location:
    Scotland
    Ratings:
    +188
    Yep. I totally agree with you.
     
  5. Zag

    Zag
    Active Member

    Joined:
    Jun 29, 2004
    Messages:
    942
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    31
    Location:
    Poole
    Ratings:
    +65
    As a word of caution I spent 2 hrs looking at a HC3000 DLP machine a while back in a dealers demo room. I took along all my best rainbow generating DVDs but after 2 hrs I'd probably counted no more than 2 or 3 rainbows in all that time. It was a convicing enough demo for me to buy the DLP machine there and then, I went away a happy man, however that all changed after I viewed it in my own cinema room.

    The dealer had a 100 inch firehawk I seem to recall and the room had a small amount of ambient light permeating around the edges of the blinds.

    Once I set up the projector at home in my bat cave with an 80 inch screen with 1.4 gain, the rainbows were almost continuous. I had to return the projector a week later at a loss of £150 :thumbsdow

    The only solution really is to try to demo a DLP machine at a dealers with a set-up a close as possible to your own.... no easy task. Or try to negotiate a minimal restocking fee before hand before parting with your money.

    I will still continue to look at DLP machines in the future but only very cautiously and would certainly never buy one without a thorough demo.
     
  6. gingerone

    gingerone
    Well-known Member

    Joined:
    Dec 10, 2002
    Messages:
    2,581
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    106
    Ratings:
    +402
    What PJ do you have at the moment Zag?
     

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