Jump to content
Sushanta Barman

FLICKERING practical bulbs

Recommended Posts

Why is dslr cameras if we shoot a scene with a practical tungsten or LED bulb it causes flickering in the video footage?? I know a bit that the frequency of light doesn't match the frequency of camera but if I take my shutter speed from 1/120 to 1/30 there if no flickering seen in the video footage. Why?   What will happen if I use cine cameras ( it has shutter angle ) ?

Share this post


Link to post
Share on other sites

Roughly speaking you want to make your shutter angle a multiple of the countries frequency... eg.. 1/50th /1/100th in 50Hz / 1/60th/120th.. in 60Hz countries .. for "normal" motion blur in cine mode there is a 180 degree "rule".. shutter is twice frame rate.. but if your shooting say 23.98p in a 50Hz location use 1/50th.. even if you have a 1/48th option.. to avoid flicker from practical lights ..  LED is also tricky as if they are in anyway dimmed then will flicker what ever you do.. !

  • Like 1

Share this post


Link to post
Share on other sites
Posted (edited)

Yes, what you are saying is right, but I am still confused technically about  why lowering the shutter speed to 1/30 from 1/60 cause a flicker-free video footage ??

Edited by Sushanta Barman

Share this post


Link to post
Share on other sites

yes no idea.. curse of LED lighting... but tungsten should not flicker .. unless shooting very high speed frame rate..

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.



  • Tai Audio



    Paralinx LLC



    Broadcast Solutions Inc



    Metropolis Post



    Glidecam



    Serious Gear



    Wooden Camera



    Ritter Battery



    Media Blackout - Custom Cables and AKS



    Visual Products



    Gamma Ray Digital Inc



    CineLab



    Abel Cine



    Rig Wheels Passport



    New Pro Video - New and Used Equipment


×
×
  • Create New...