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projector screen and angle ??

Discussion in 'Projectors, Screens & Video Processors' started by Meridius, Feb 19, 2005.

  1. Meridius

    Meridius
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    hi all

    i was interested in a projector screen as i am interested in the new sony hs50
    now whta would be the best gain

    is lower gain better or higher would it affect the contrast or black level as i want to be able to get the best blacks out of this projector

    also what about viewing angle i want to be a able to view it like you would projecting onto a wall i dont want to be able just to see it in front of me my family would watch it but at the side of the screen aslo the screen would be mounted high up

    do`s the angle matter or ??????

    thansk for the help
     
  2. Gary Lightfoot

    Gary Lightfoot
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    Hi Meridius,

    How big are you projecting? If the screen size is too big, then you will need a screen with gain. The more gain, the higher the black level, so you have to decide if the image is too dark overall and if the black level can go any higher. Lamp projectors will never 'project' true black anyway.

    A screen with gain will have a viewing cone - the greater the gain, the tighter the cone, but if you're not moving around it may not be noticable. Those at the side will get a dimmer image than those in the center (up. down, left or right) but depending on the gain and where they're sitting, they may not be getting a great deal less than a matt white screen. If you're off to the side by quite a bit, then they could be seeing less than they would on a matt white screen or a white wall. It's something that has to be taken into account really.

    When you see screen gain on a manufacturers literature, you may see the trem 'half gain'. This is where the screen falls off to half the gain of the advertised gain, and is given in degrees:

    The 1.35 gain Stewart Firehawk gives 0.68 gain at 24 degrees for their 1.35 gain grey screen:

    http://www.stewartfilm.com/engineering_specifications/firehawk.html

    If viewing angle needs to be taken into account for your situation, then try to find this data to evaluate the screen.

    Gary,
     
  3. Meridius

    Meridius
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    someone said in here that sony are giving away some 1,7 gain screens with the sony hs50 ?????

    i dont have alot of money but i was woundering what i would be able to get for about £200
     
  4. Gary Lightfoot

    Gary Lightfoot
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    How big do you want your screen to be?

    Gary.
     
  5. Meridius

    Meridius
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  6. Gary Lightfoot

    Gary Lightfoot
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    That's a unity gain screen about 6ft 6ins wide. It should allow the best black level possible other than a grey screen, and I would hope that the HS50 should look reasonably bright on it.

    Try to find people with similar size screens and see what the general consensus is.

    I would suggest that you get the projector after a demo so that you know if you like it or not, then project onto a wall at home to see what size screen looks good to you. When you're happy with a certain size, order a screen to match.

    Gary
     

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