C100: Avoiding Flickering/Waves

northbyns

northbyns

Active member
Hi guys,

I'll keep this short. I'm working on a documentary in Israel and Palestine, where the electrical frequency is 50 Hz. I'm getting some unpleasant waves in my footage when filming under fluorescents... currently shooting 24P with a 1/48 shutter.

If you could offer some advice on settings to avoid these "waves" I'd really appreciate it. Or is this the best I can do?
I can't shoot at 25 fps or 1/50... my C100 was bought from the USA.

Best wishes,
Nehemiah
 
I thought the C100 had PAL and NTSC frame rates? Of course unless you're only going to the web shooting 50i/25p for the US is going to get you a whole new set of problems. I had the same issue, "waves" shooting NTSC under old PAL fluoro lighting in a courtroom, tried the deflicker filter in Avisynth, but finally decided had to live with it.
 
Rainer said:
I thought the C100 had PAL and NTSC frame rates? Of course unless you're only going to the web shooting 50i/25p for the US is going to get you a whole new set of problems. I had the same issue, "waves" shooting NTSC under old PAL fluoro lighting in a courtroom, tried the deflicker filter in Avisynth, but finally decided had to live with it.
Click to expand...

You can change to PAL frame rates, shoot at 25p/50i then (having remembered to swap back to 24/60 when you're done :)) conform the footage back to 24p in your NLE. Most people won't notice a 4% change in speed.
 
Thanks guys.

I wasn't aware that I could shoot in 25P on the C100. When I cycle through frame rates on the Ninja 2 and the C100 (when connected) there's only 23.98, 29.97 and 59.94i listed...

N
 
northbyns said:
Thanks guys.

I wasn't aware that I could shoot in 25P on the C100. When I cycle through frame rates on the Ninja 2 and the C100 (when connected) there's only 23.98, 29.97 and 59.94i listed...

N
Click to expand...

You ned to change the System Frequency to 50hz in the bottom menu (the wrench). Once you do that, 25PF and 50i become available.
 
northbyns said:
Thanks for writing!
I can't... 1/48 jumps right to 1/60.
Click to expand...

Adjust the shutter increments to 1/3 (IIRC) and try it again. It worked for me a few weeks ago in Greece. I was shooting at 29.97fps but I suspect adjusting the increments will give you a 1/50 option that will fix the 50Hz flicker.
 
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