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SP4805 scaler? apparently not in NATIVE MODE!!!

Discussion in 'Projectors, Screens & Video Processors' started by braiden, Mar 24, 2005.

  1. braiden

    braiden
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    Hi everyone can some please answer a question for me. I know the 4805 scales evrything to 480 lines but I was just reading a description of the aspect ratio's on this website

    http://www.crutchfield.com/S-26ncmezFHDx/cgi-bin/ProdView.asp?g=160150&id=detailed_info&i=590SP4805

    And it states that
    "Native: this mode bypasses the internal scaler, displaying the image with no resizing"

    Can anyone eleberate on this as I am a little confused does it mean it does not scale the image to 480 lines?

    many thanks

    braiden
     
  2. Gary Lightfoot

    Gary Lightfoot
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    That could mean that if you sent it a PAL signal of 720 x 576, you will only see the center portion of image - 720 x 480, with the sides as black bars and the top and bottom cut off, so the image isn't being made to fit the panel by the scaler, and the aspect ratio might look wrong.

    Gary.
     
  3. braiden

    braiden
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    hi gary

    This is true , but this only seems to happen when watching an interlaced picture, for instance if I have my DVD set to PROG SCAN the picture is the same in aspect 16:9 as itr is in NATIVE, the picture then stretches to fill the whole screen in LETTERBOX mode and I get black bars at the sides in 4:3 mode.

    one of the dvd's this happens with is the gladiator by th way.

    Braiden
     
  4. MikeK

    MikeK
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    You do have your DVD player set for 16:9 mode don't you?
     
  5. braiden

    braiden
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    Hi mike

    Yes it is set to 16:9 in my dvd system set up.
     
  6. Gary Lightfoot

    Gary Lightfoot
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    Does your player do PAL progressive too?

    Gary.
     
  7. braiden

    braiden
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    Yes I think it outputs at 576p in progressive scan
     
  8. Gary Lightfoot

    Gary Lightfoot
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    Does it do the same for both PAL and NTSC progressive?
     
  9. braiden

    braiden
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    Just checked on the terminator extreme edition wich is ntsc and outputs at 480i and 480p
     
  10. braiden

    braiden
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    sorry gary just realised what you actually meant , no in ntsc when displaying the native aspect it cut's off the sides(displays grey areas)
     
  11. maverick177uk

    maverick177uk
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    So do you have yours set in naitive all the time, its just that when I see many of the setups on here they do not seem to have black bars at top and bottom, my 4805 is set a t 16:9 with my arcam set with progressive scan does naitive not elongate the picture, I 've got a big screen and want to fill it all the time.
     
  12. braiden

    braiden
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    The only aspect that fills the whole of my screen from what I have seen is The LETTERBOX aspect. Asi said in progressive scan 16:9 and NATIVE are identical.
     
  13. maverick177uk

    maverick177uk
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    Well I can't fill mine, if say I put SW on I have letterboxing or even anamorphic such as the Incredibles I still get the black bars, but if I put on Saving Private Ryan or Hellboy they cover the whole screen, I have a 92" 16:9 screen, could this be down to the aspect ratios of the films?
     
  14. Gary Lightfoot

    Gary Lightfoot
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    Braiden,

    I was thinking that in native, an NTSC 16:9 movie would have black bars at the sides, but a PAL would fill the screen. is that the case? I'm still not sure what's hapening though..

    Maverick,

    If the films are 2.35:1, then you will always have black bars above and below the movie. If it's 16:9 or 1.77:1, then it will fill the screen. 1.85:1 may have very slim bars top and bottom.

    Gary.
     
  15. mojomanic

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    In native mode the 4805 will fill a 16:9 screen if you are watching a fullscreen or 4:3
    aspect ratio. All widescreen aspect ratios will look the same in native or 16:9 settings.
     

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