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Vizio M801d-A3 - 80 inch LED Panel - discussion

Discussion in 'Displays' started by Gregg Loewen, Sep 16, 2013.

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  1. Gregg Loewen

    Gregg Loewen Video Standards Instructor, THX Ltd.
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    hi guys

    I wanted to do a quick comment on the Vizio 80 inch LED panel.
    This thing is frkn huge!! What ever it lacks of in quality...it more than makes back in size!

    I was called to calibrate this beast at a established client's home. After doing my basic tweeking, I was able to achieve a very nice 33-35 fL of light output. This is quite huge when the size is considered. I turned off the adv localized dimming and the 240 hz processing. The gray scale tweeked out quite flat and the gamma dialed in to 2.35. I was very happy with the results.

    Then we moved on to the color decoding. It was NOT good. The final color setting was at 38 (center point being 50). While we were not too close to rec709 gamut flesh tones did look good and I would be happy to watch this display for a movie. Fortunately, the customer had a DVDO DUO. Using the duo to further tweek the colors and by using 75% saturation and luma points (an advanced technique) vs the traditional 100% saturation points. Most of the deltaE color errors dramatically dropped to acceptable levels.

    So my summarized opinion: Great display for the size and when a front projector system is not practical. Strongly consider mating it with a DVDO DUO processor for more accurate colors.

    All for now, Ill try to post some calibration charts later today.

    Gregg Loewen
     
  2. GeorgeAB

    GeorgeAB Well-Known Member

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    G. Alan Brown
    Gregg,

    What type of video processing is needed to adapt such a large display into a scalable pixel map? In other words, if this is a person's only display for watching all content, some programming would be better to watch as a smaller image. Examples would be: lower resolution sources (standard cable channels, SD broadcast channels, laserdisc collections, DVD collections, YouTube material, etc.), programs formatted for smaller image sizes (talking head newscasts, content with mostly closeup camera work, etc.), some computer images, etc.

    Movies are meant to occupy most of a person's field of view. Many TV shows, not so much. It would be great to have the option of resizing non-movie content as a smaller image in the middle of such a large screen. I know there are options in the pro community, but is there something available at less cost and somewhat simple to operate for consumers?

    Best regards and beautiful pictures,
    G. Alan Brown, President
    CinemaQuest, Inc.
    A Lion AV Consultants affiliate

    "Advancing the art and science of electronic imaging"
     
  3. Gregg Loewen

    Gregg Loewen Video Standards Instructor, THX Ltd.
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    david gamma image.jpg

    this is after calibration without the DVDO DUO processor
     

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  4. Gregg Loewen

    Gregg Loewen Video Standards Instructor, THX Ltd.
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    Here are reports showing the advanced color management with and without the DUO in place.
    View attachment 4445
     
  5. Gregg Loewen

    Gregg Loewen Video Standards Instructor, THX Ltd.
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  6. Gregg Loewen

    Gregg Loewen Video Standards Instructor, THX Ltd.
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  7. Dave Upton

    Dave Upton Owner
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    Gregg,

    Thank you for sharing this. Looks like it's worth recommending provided a calibrator and an outboard CMS is available
     
  8. Ted Van Duyn

    Ted Van Duyn Well-Known Member

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    Sorry for my newbness, but are you saying you need an external device that every device plugs into plugs directly into the TV itself in order to get better colors?
     
  9. Gregg Loewen

    Gregg Loewen Video Standards Instructor, THX Ltd.
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    yes.

    Like a DVDO DUO or Lumagen Mini 3D processor.
     

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