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What is ANAMORPHIC widescreen???

Discussion in 'General TV Discussions Forum' started by rmsdev, Sep 30, 2002.

  1. rmsdev

    rmsdev
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    Hi I have several DVD which says ANAMORPHIC Widescreen on the front

    At the back some the aspect ratio is quoted as 1.85:1 for some and for others it is 2.35:1

    So what is exactly ANAMORPHIC Widescreen

    And which one should fill a Widescreen TV completely?

    Regards
    Devesh
     
  2. mh66639

    mh66639
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    My view:

    1.85:1 anamorphic should fill your widescreen TV without zooming.

    Anamorphic means storing the extra data in each frame to fill the sides of the widescreen TV.

    2.35:1 is a panoramic picture so will exhibit bars top and bottom.

    Both should have bars left and right if they are non-anamorphic without zooming.

    There are better descriptions than this, but I cannot remember the URLs.

    Regards,
    Matt.
     
  3. rmsdev

    rmsdev
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    Thanks

    I have noticed that with 2.35:1 material, the screen does not fill up completely even if I use the zoom feature on the TV (ie cinema mode on a toshiba TV)

    is that normal?

    Regards
     
  4. mh66639

    mh66639
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    There are various zoom functions available pending on your TV and DVD format.

    - Some fill the screen both ways disregarding ratio.
    - Some fill the screen width ways retaining ratio
    - Some fill the screen height retaining ratio
    - etc..

    I don't know about Toshibas but I would guess its keeping some sort of ratio or aligning either width or height.

    I prefer to watch without zooming to keep the picture quality and ratio.

    Matt.
     
  5. Kevo

    Kevo
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    Anamorphic is one of the most important things regarding a DVD (or even a Digital broadcast).

    All TV material/DVDs, videos etc are initially put out as 4:3 regardless of their actual aspect ratio...2.35, 1.85, 16:9 etc.

    So just think of this 4:3 'window' that a WS film has to go into.
    It MUST somewhow go into this window so people who are still usting conventional 4:3 TVs can still enjoy it.

    Basically, putting a rectangle into a 'square'.

    There are two ways of achieving this....

    1. Non-Anamorphic (aka 'Letterboxed')
    Shrink the whole image down so you are left with just a narrow image with black borders. These black borders are still part of the 4:3 image and are therefore using up good screen resolution.
    With a WS TV you can either watch it in 4:3 mode and have borders all the way round or Zoom ('Cinema' mode on Tosh WS TVs) the image so it blows it up horizontally and vertically but at the sake of image quality as the picture will be simply magnified and using double(?) the horizontal resolution that it needs.

    2. Anamorphic
    A MUCH better method in which the height of the image is maintained and NOT shrunk as in the above and the width is squashed horizontally (the anamorphic process) so as to fit the whole image into the 4:3 TV, thus using more, if not all of the TV's horizontal line resolution, depending on the aspect ratio of the film. If it's 1.85 then it would pretty much fill the whole screen, if it's 2.35 then you will still get black borders but smaller ones than in the above.
    A WS TV will simply 'unsquash' the image horizontally and everything will look in proportion and nothing is magnified as in the 'zoom' option above so the full screen resolution will be used.

    Of course, all the above applies to WS TVs which will simply manipulate a 4:3 image in aany which way you chose.

    Remember a WS TV has no more resolution than a 4:3 TV, it merely stretches the 4:3 ananmorphic image horizontally.

    People using a 4:3 TV and watching an anamorphic DVD would set their players to 'Letterbox' so the DVD would eliminate every third horizontal line and replace it with black, thus putting the picture at it's correct proportions at the sake of losing some of the overall pic quality to black borders.

    Phew!

    I hope that makes sense.

    The best and easiest way is for somebody to actually show you.
    I've 'educated' several people this way!
     
  6. rmsdev

    rmsdev
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    Hi Kevo

    Thanks for the explanation...

    but I am still confused

    so does this mean as a WS TV owner I should buy anamorphic material for better quality?

    Regards
    Devesh
     
  7. mh66639

    mh66639
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    Yes, or you will get black bars left and right without using the zoom function.

    Matt.
     
  8. Kevo

    Kevo
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    Yes, absolutley, but you don't always have that choice as some WS DVDs are surprisingly STILL be produced non-anamorphically.
    Fortunatley these are far and few compared to the 'old days'.

    Give it time, it will all sink in eventually.
    I was the same when I first got my DVD player and WS TV.

    I remember using the Zoom feature on The Matrix
    (2.35:1 Anamorphic) to get rid of the black bars on my WS TV :blush:

    But you should NEVER try the above at home :)
     
  9. rmsdev

    rmsdev
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    Thanks again

    why do you say dont try the zoom on 2.35:1 material (like your matrix)

    I hate to get black bars on my tv ... that is why I bought a WS tv

    regards
    Devesh
     
  10. lynx

    lynx
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  11. Kevo

    Kevo
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    DONT!

    ...that is why I bought a WS tv
    [/QUOTE]

    Yes, you bought a television not a projector or screen, a televion which is primarily to receive television broadcasts...16:9 Digital ones....

    The black bars....Embrace them and you will learn to ignore them and appreciate the film in all it's WS glory

    If if a film is made in 2.35:1 then that was the way it was intended to be seen at the cinema and not your WS TV

    Don't confuse the ratio of a WS TV (16:9) with that of a feature film (which there are literally 100s!).

    They are two competing media. (always have been)

    WS Television is exactly that, television, developed with the constraints and technologies of Digital broadcasting and does NOT have any obligations with Hollywood, cinema or even DVD for that matter

    Anyway, 16:9 is a v good compromise that can handle all aspect ratios.

    Believe me you are not being cheated or losing anything with the black bars, you are seeing the film in all it's WS glory....
    More not less.

    You'll learn to appreciate it soon enough !
     
  12. jim.rae

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    One very good way to get rid of the black bars on your telly is a fairly low tech solution.

    Do what they do in the cinema and turn the lights down!

    You wouldn't watch the film in the local Odeon with the lights blazing or the sun shining in...

    Put a 40 watt (or less) bulb in a lamp behind the TV, turn the rest off, and the black bars will disappear in minutes.

    And you'll still be able to find the beer - dead easy...
     
  13. amorenod

    amorenod
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    The 6 Star Trek movies pack is a good example. The 4 first movies are anamorphic, but the last 2 are not, so you have to play with the zoom setup if you want to fill the screen, at the cost of much lower resolution.
     

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