EOS R6 flicker in natural light

Discussion in 'Beginner Questions' started by JohnM1981, Jun 16, 2022.

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  1. JohnM1981

    JohnM1981 New Member

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    Hello everyone. I have an EOS R6 and I'm shooting video for the PAL system (Europe). My settings are 1080p 25fps IPB Standard, f2.8, ISO 1600, 1/50 sec, custom White Balance and shooting with natural light. I've noticed that I can see flickering in high contrast areas as I move the camera. This happens with all my lenses including the 50mm STM 1.8, the 16-35 f4 L etc.

    I'm attaching a google drive sample of a video where the flickering is visible, especially where a door meets a wall etc.

    https://drive.google.com/drive/folders/1QsZNVKwaxuvbOm4dH6AjJYYXrCCRlO-f?usp=sharing

    Any ideas???

    Thanks
     
    JohnM1981, Jun 16, 2022
    #1

  2. Caladina

    Caladina Well-Known Member

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    i watched it but i couldn't see any flickering, maybe i'm just missing it?
     
    Caladina, Jun 17, 2022
    #2
  3. Craig Sherriff

    Craig Sherriff Well-Known Member Site Supporter

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    Welcome to the forum, John. Like Caladina. I could not see any issue but at a guess it may have been light reflecting off a flat surface since you are using natural light, this can vary and is not always constant, due to cloud cover affecting what light is coming into the room.
     
    Craig Sherriff, Jun 17, 2022
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  4. JohnM1981

    JohnM1981 New Member

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    Thanks for the replies. If I shoot at 60fps it's not really noticeable so I imagine it could be judder i.e. I'm panning too fast...
     
    JohnM1981, Jun 18, 2022
    #4
  5. Caladina

    Caladina Well-Known Member

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    1/50 is quite slow on panning, i don't do video but i tested it out on my M50 and found it to be jerky when panning at 1/50 so i suppose it could be that rather than light flicker but again i know nothing about video yet just stills
     
    Caladina, Jun 18, 2022
    #5
  6. johnsey

    johnsey Site Moderator Staff Member Site Supporter

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    Yeah I like Caladina don't shoot much for video, but 1/50 on a 50mm lens is right at the reciprocal rule for freezing hand held shake in a still image. Seems a bit slow a shutter for panning especially at the speed you were panning. I'm sure there are rules in video for panning I just do not know them :).
     
    johnsey, Jun 19, 2022
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  7. JohnM1981

    JohnM1981 New Member

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    Thanks johnsey and Caladina. I'm shooting on PAL in a region with 25Hz current frequency, therefore I normally shoot video at either 25fps of 50 fps (not 60fps as I erroneously stated before, sorry). To have the best motion blur, the 180 degree rule says you have to have a shutter speed 1/twice your fps i.e 1/50 or 1/100 respectively.

    Caladina what you said is on the mark if you shoot photos! Although I'm a long time photo shooter, video is new for me so I didn't know that you should pan at speed which will allow at least 7 seconds to move from the far right of your field of view to the far left. If not, a flicker-like effect is introduced which is called judder.

    Unfortunately, I didn't know the word "judder" described the effect. If you're interested you can look it up on youtube, there's plenty of videos explaining it.

    Hope this helps someone else struggling with this!
     
    JohnM1981, Jun 27, 2022
    #7

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