Jump to content
Jesse Lee Cairnie

Intentional flourescent flicker

Recommended Posts


Is there any way to achieve this effect outside of buying used fixtures with bad ballasts?

 

You can try putting an ordinary shoplight on a dimmer or flicker box -- that works pretty well until you fry the ballast...

Share this post


Link to post
Share on other sites
Guest Evan Pierre

CFL's will also give you gnarly flicker if dimmed.

Share this post


Link to post
Share on other sites

That's what I thought, but I tried that on a shoot the other day and it just turned off after I dimmed it down past a certain point. I wish I knew what I was doing wrong.

Edited by Ryan Thomas

Share this post


Link to post
Share on other sites

The emergency shoot day fix is to have a guy sit there with the plug and nervously interrupt the power. Flourescents draw very little current, so you're not going to arc and fry a prong.

 

 

 

 

-- J.S.

Share this post


Link to post
Share on other sites

Thank you, I will experiment with Shop fixtures on dimmers... I was under the impression that if fluorescent doesn't have exactly 110/20v they would shut down..

 

none the less I will give it a try and see.. and I will pick up a couple bad ballast fixtures too and compare the two..

 

Cheers!

Share this post


Link to post
Share on other sites

I recall on a set I had bought these $9 shop fixtures from Home Depot. They worked great, no flicker at all, until we had a longer cable run (and voltage drop) when they flickered on and off like mad. Worked perfectly for the shot and what they were doing, and they still work to this day. If memory serves, the line was down 'round 90V.

Share this post


Link to post
Share on other sites
That's what I thought, but I tried that on a shoot the other day and it just turned off after I dimmed it down past a certain point. I wish I knew what I was doing wrong.

 

The range to dim CF is extremely narrow. If you simply slide the dimmer back and forth it will just switch the light off at some point. Instead try sliding or turning the dimmer knob very slowly. At the point it switches off tap the slider (or slowly turn the dimmer knob) in the opposite direction. You should get a flicker.

Share this post


Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.



  • Visual Products



    Gamma Ray Digital Inc



    Abel Cine



    G-Force Grips



    Glidecam



    Wooden Camera



    Paralinx LLC



    Ritter Battery



    CineLab



    Rig Wheels Passport



    Metropolis Post



    Broadcast Solutions Inc



    Tai Audio



    Media Blackout - Custom Cables and AKS



    Just Cinema Gear



    FJS International



    New Pro Video - New and Used Equipment



    Serious Gear


    Cinematography Books and Gear
×
×
  • Create New...