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Experts, Will This Plan Work???

Discussion in 'Projectors, Screens & Video Processors' started by cologne, Jun 14, 2004.

  1. cologne

    cologne
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    Dear Nigel et al,
    You seem to be expert(s) on screens and I need your advice. I am about to get the Hitachi PJ TX 100 and my assumptions are:

    1. I watch a lot of TV and satellite signal, originally in 4:3
    2. the projector has a convenient 1.6x zoom lens plus lens shift
    3. the viewing distance will be about 3.5metres
    4. I shall be folding the screen every night or so – see my family 'waf'

    So, I plan to buy a 4:3, 100" screen, which is 2x1.5metres in dimensions. For 4:3 material, no issues whatsoever. When I want to watch a 16:9 film, then I only roll-out part of the screen, down to a height of 1.12m from top point, which is equivalent to a 90" 16:9 screen. If I also manage to get a screen with a black housing, then it is like having the black frame around the viewable screen area too!

    As for the height of the lower point of the screen from the floor, which I have read is best to be at 80-90cm, the difference in height between a 4:3 and 16:9 screen for a given width of 2metres is approx. 38cm, which makes only small difference to me when we talk about a viewing distance of 3.5 metres and I could live with (or I could get a patent to lower the whole housing a bit from the ceiling).
    With your experience, how does the whole plan sound? Are there any falls in my plan or could this work?
    Many thanks in advance! Also, whoever else feels like providing any advice, feel free!
    Nicholas
     
  2. Kramer

    Kramer
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    Personally I'd suggest a 16/9 screen for a 16/9 ratio PJ.

    You're not the first to think of this but TBH it's awkard & difficult to impliment. "Zooming" a 16/9 PJ to fill a 4/3 screen for 4/3 ratio material is far from ideal :(

    Go for a screen that matches your PJ's aspect ratio ;)
     
  3. aDane

    aDane
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    I too am getting the Hitachi and want a 4:3 roll screen which I then would "adjust" according to the ratio i need at a given time. I think it certanly sounds like a sound solution.

    Kramer wrote:

    I understand that it involves some fidgeting, but are you saying that the result also is "far from ideal"?

    Is it not possible to get the true 4:3 ratio with a 16:9 pj? Is it really done by "Zooming" and not by some inherent "switching" from ratio to ratio?

    Is an originally 4:3 ratio signal automatically stretched to fit the 16:9 ratio, and then one has to somehow convert/manipulate it back to the 4:3 ratio???

    Im sure Im missing some fundamental points here, but im a newbie and a little confused.

    Thanks for reading! :)
     

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