The above Ad will no longer appear after you Sign Up for Free!

Backlighting question.

Discussion in 'Lighting and Electrics' started by gabe, Mar 11, 2006.

  1. gabe

    gabe Member

    Messages:
    89
    Likes Received:
    0
    How is it possible to have backlights without the audience seeing the fixtures and/or being blinded by them?
     
  2. jonhirsh

    jonhirsh Active Member

    Messages:
    837
    Likes Received:
    15
    Location:
    Toronto, Ontario and Valencia, California
    back light from the grid or from the floor?

    If from the grid just place it better and use a top hat.
    If from the floor smaller fixtures try a birdie.

    And for the non blinding thingy um focus it better have your actors hit there mark. personaly i dont give a crap i blind my audiance all the time but thats part of my designs its not by accident



    JH
     
  3. SteveB

    SteveB Well-Known Member

    Messages:
    4,042
    Likes Received:
    790
    Location:
    Brooklyn, NY
    It's dependent on the sight lines.

    A well configured space will allow the electrics that have units serving as Bax, to be masked from audience view with a border/teaser. If done correctly, and if the theater sightlines cooperate, your back light does it's job of lighting what you want lit while not being seen. This is a factor of front row seating distance to the performance area, enough pipes to hang a border in the right place as well as being flown to the right height, and electrics well placed as well as flyable.

    It's sometimes a compromise, and in some spaces, impossible to correct and in some instance, desirable to see the fixtures.

    SB
     
  4. zackw250

    zackw250 Active Member

    Messages:
    103
    Likes Received:
    1
    Location:
    Bellingham, WA, USA
    I have this problem in my theatre. We have no fly system, and our lighting grid is only 16' above the stage. Any back lighting positions focused on the prescinium of the stage leak into the first couple rows. The rest of the auditorium can see the source of the light, so I always use barn doors, and usually extend the barndoors using black foil.
     
  5. jonhirsh

    jonhirsh Active Member

    Messages:
    837
    Likes Received:
    15
    Location:
    Toronto, Ontario and Valencia, California
    In your situation, you might want to try using a S4 insted of a fresnel. Then you can just shutter cut off the edge of the stage. If your worried about the amount of area that you light with a S4 you could use a 50 degree.

    JH
     
  6. LightingChild88

    LightingChild88 Member

    Messages:
    19
    Likes Received:
    0
    for me the grid placement is everything and im a fanatic of back lighting,but i want to try out top hats. but im for the s4s all the way
     
  7. gafftaper

    gafftaper Senior Team Senior Team Fight Leukemia

    Messages:
    12,670
    Likes Received:
    2,695
    Occupation:
    Theater Manager & T.D.
    Location:
    Seattle, Washington
    As so many people have said, a lot of it is about theater design. If you don't have good design, then moving your curtains, well placed ellipsoidals with shutter cuts, top hats, and tricks with barn doors and black foil are all good options. One point I want to toss in is that you can have a fairly high angle and still get an ok back light look. If nothing else works, try moving the instrument position closer to down light. It's not perfect but it might help.
     
  8. zackw250

    zackw250 Active Member

    Messages:
    103
    Likes Received:
    1
    Location:
    Bellingham, WA, USA
    The S4 would cause the same problem. It's not an issue of "I have light bleeding where I don't want it", but more of an issue of our stage thrust goes out INTO the audience, so to make sure I have adaquet hair light when the person is standing on the thrust, the 20 seats around and infront of the thrust get lighted. It's a theatre/seating design problem. My have very large barndoors on my fresnel so it's not that.
     
  9. BillESC

    BillESC Well-Known Member Premium Member

    Messages:
    2,325
    Likes Received:
    362
    Location:
    Kilmarnock, VA
    Zack,

    You need to create a new hanging position over the thrust... no other way around your problem.
     
  10. gafftaper

    gafftaper Senior Team Senior Team Fight Leukemia

    Messages:
    12,670
    Likes Received:
    2,695
    Occupation:
    Theater Manager & T.D.
    Location:
    Seattle, Washington
    Got to agree. If your talking a thrust stage it's all about nearly down light and shutter cuts.
     
  11. zackw250

    zackw250 Active Member

    Messages:
    103
    Likes Received:
    1
    Location:
    Bellingham, WA, USA
    Yeah, top light would probably work for the people in the room, but it doesn't look great on video. The camera sees the bleed of the top light onto the forehead, chest, legs, hands, et - and video quality is a priority.
     

Share This Page

  1. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
    By continuing to use this site, you are consenting to our use of cookies.
    Dismiss Notice