Bias Lighting for a 65" Display?

Discussion in 'Displays' started by Ronald Epstein, Jan 12, 2014.

  1. Ronald Epstein

    Ronald Epstein Administrator
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    Decided it is time to put some backlighting behind my 65" Samsung plasma.
    Anyone have suggestions for decent lighting? Amazon has a few choices but I am uncertain how good they are.
    I also heard that the lighting needs to be the correct temperature. So, I suppose that would be an important factor.
    Thank You
     
  2. Jim Mcc

    Jim Mcc Producer

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    What made you decide this?
     
  3. Ronald Epstein

    Ronald Epstein Administrator
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    Have read many positive reviews that such lighting not only relieves
    eye strain when watching content in a totally darkened environment,
    but also raises black levels.
     
  4. schan1269

    schan1269 HTF Expert
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    Philips tried this a few year's back...and look where it got them...Coloring is up to you, and room decor. I've designed low level(as in where in the room) about two feet off the floor(think movie theatre aisle lighting).I would, essentially, choose one "color" for all the lighting in the room. Some like 6k, some like 4k.I actually went 6.5k in my office.
     
  5. Ronald Epstein

    Ronald Epstein Administrator
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  6. schan1269

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    Looks like a re-packaged rope light(the second one)
     
  7. Ronald Epstein

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  8. schan1269

    schan1269 HTF Expert
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    I went and read(on phone so don't know how to link) the 2009 article George(of CinemaQuest) wrote on this forum.Bias kits are common to buy because they come with short tube lights and mounting stuff.Rope light, then, were inconsistent in "were they really 6500k" . That isn't so much the case anymore. Sure, there are crap rope lights. But crap tube lights exist as well.Granted 6500k white is the recommended bias. In a pure controlled light room, sure. In your living room with connected kitchen/ hallway etc...match your lights.However, don't just match the K. If you got ccfl, get a set of ccfl tubes. If you've bought LED bulbs, get led bulbs(rope or tube).
     
  9. GeorgeAB

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  10. schan1269

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    By the way. Not disagreeing that 6500k is the best choice, but.Back when incandescent ruled the roost, sure...6500 fluorescent sucked out yellow light.This is now 2014, incandescent is dead. I've not run across anybody that doesn't buy "whiter light" bulbs.If the room has whiter bulbs, to me, and the real world buying...yes 6500 is best. However, if your lighting in the room is not yellow anymore...you could reduce the bias down.My recommendation comes from dealing with wives going "but it ruins the color of my flowers". Bias, even if the wrong color, is better than nothing.
     
  11. Jim Mcc

    Jim Mcc Producer

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    Raises black levels? To me, that means blacks are lighter, and that's a bad thing.
     
  12. GeorgeAB

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    Choosing the color of bias lighting pertains to only a singular purpose- to come as close as possible to match the international standard white point of the video display, which should be D65.
     
  13. schan1269

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    Not that I'm arguing against D65/6500K lighting...but.Philips did this long ago with bias that matched the "primary color displayed at the time". Hugely annoying, but the same purpose. I've found times it made more sense(to me) to change up the bias...for two reasons...The content you were watching was never close to D65.People wanted the room lighting to match.I get the whole "video mastered at" and "calibration to do".All fine and dandy, until your content doesn't reach that goal. I've done two colors of bias for clients before.6500K for when the content was going to advantage, and another around 5-5.5 to match the remaining room light. Then the client, by trial and error, can switch between.I watched The Whip and the Body and Pit and the Pendulum the same night. 6500K bias would have been distracting.2001, you bet I used 6500k.
     
  14. Jim Mcc

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    I don't want any part of using bias lighting. The darker the room, the better. As my elderly mother would say, "What a bunch of hooey" !!
     
  15. Type A

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    Creating light pollution in your viewing enviroment is not the answer. If you are experiencing eye strain adjust the brightness of your display.
     
  16. Ronald Epstein

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    ...wow...and I have a top calibrator recommending that I get
    bias lighting. So who do I believe?

    ...and reading some of the reviews on Amazon, it appears a
    majority of people using bias lighting are seeing improved performance
    from their display (or rather, the way the display and light interact).
     
  17. Robert Crawford

    Robert Crawford Moderator
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    If you're happy with what you're seeing now, why mess with it?
     
  18. Ronald Epstein

    Ronald Epstein Administrator
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    A few reasons....

    First, Gregg Loewen, one of the top calibrators in the country, sent me a backlighting
    kit with the recommendation to use it. Unfortunately, I had a pet destroy it and I never
    got to use the kit.

    Now I have a rather bright display. I prefer it bright, but I admit, the brightness does
    seem to cause a little eye fatigue. Reading the reviews on Amazon, it seems that bias
    lighting greatly improves the overall viewing experience.

    If you have the time, you may be surprised what you read...

    http://www.amazon.com/gp/product/B007TG5EG8/ref=oh_details_o05_s00_i00?ie=UTF8&psc=1

    The lights are rather cheap. I would buy two sets.

    BTW, spoke with Gregg on the phone a week ago -- didn't even mention bias lighting --
    and he brought it up in conversation saying it would be a good idea to use to raise black
    levels even further.

    Read some of those Amazon reviews and you'll find owners commenting they got better
    black levels (not that I am unhappy with the black levels right now)
     
  19. schan1269

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  20. Ronald Epstein

    Ronald Epstein Administrator
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    Sam,
    Thank you, Sir. Pretty much the same thing (and company) in my link in post #18 above yours.

    It will be either one of those that I will order.
     

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