Interference lines from led lights?

Discussion in 'Camera Installation Questions' started by dudemaar, Apr 25, 2019.

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  1. dudemaar

    dudemaar Getting the hang of it

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    I am getting horizontal interference lines running through my picture on some cameras in corridors where they are installing new bright led lighting above my cameras. I was thinking electrical interference but my wires are not near the electrical wires. Electrician is running his lights and conduit surface mount on ceiling. Is it possible it’s a led frequency thing?
     
  2. keneil01

    keneil01 n3wb

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    I’m not an camera expert, but I do know light. Flickering light is a pain for camera and humans. Can be measured by using this free app. When I buy LED for my home, I always try to get as low as possible. Best is less then 5% (flicker free).

    Flicker tester for iPhone
     
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  3. tangent

    tangent IPCT Contributor

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    More likely to be flickering light than EM interference, though LED bulbs can also be electrically noisy.
     
  4. SouthernYankee

    SouthernYankee IPCT Contributor

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    please provide a video of the problem.

    I agree it may be the flicker of the lights beating against each other. There have been a number of post about lights on different electric phase, on different circuits, causing lines to move up or down the video.

    on some cameras there is an Anti-flicker option on exposure settings.

    What make and model cameras
     
    Last edited: Apr 25, 2019
  5. dudemaar

    dudemaar Getting the hang of it

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    I bet it’s Flicker then. I will take a video tomorrow. Pictures didn’t seem to capture it. They are uniview 5mp turret cameras. Will check tomorrow if they have the anti flicker option. Thanks a bunch for help guys.
     
  6. SouthernYankee

    SouthernYankee IPCT Contributor

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    A snap shot picture sill not show the problem. Record ~30 second video. Post it to youtube, then link it into the post
     
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  7. dudemaar

    dudemaar Getting the hang of it

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    Couple vids here of flickering.?
     
  8. SouthernYankee

    SouthernYankee IPCT Contributor

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    That is the lights.
    Good video.

    Look for setting in the camera to reduce the flicker.
    Make sure the camera and all lights are on the same electric phase,this will reduce the problem but may not prevent it.

    I have mostly seen this a night with street lights and other light sources.
     
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  9. fenderman

    fenderman Staff Member

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    if there is a 50/60hz setting toggle it. Sometimes this is locked into the firmware pal/ntsc.
     
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  10. timb999

    timb999 Getting the hang of it

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    Late to the thread but I can verify I have had same issue. I have bought LED lights to use at night, and found that one of the floodlights I bought caused unpleasant flickering on a Hikvision PTZ camera. I assumed it must be a frequency thing too and sent it back to Amazon. Found another alternative which was fine and didn’t cause any problems...
     
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