ISO problem? Weird light flicker/flash BMPCC4K

The place for questions about shooting with Blackmagic Cameras.
  • Author
  • Message
Offline

tobidesouza

  • Posts: 1
  • Joined: Mon Dec 02, 2019 4:17 pm
  • Real Name: Tobi Izedomi

ISO problem? Weird light flicker/flash BMPCC4K

PostMon Dec 02, 2019 4:49 pm

Hey there,

I Was shooting an event a few days back and whilst recording I changed the iso and aperture to accommodate the shows light change. when I saw the footage back there is a weird flash/flicker in the middle of the iso change that lasts for one or two frames before returning to normal. THis occurs every time I change ISO whenever I do this. Problem occurs in the second frame.

Untitled.png
Untitled.png (802.41 KiB) Viewed 516 times

Untitled 2.png
Untitled 2.png (426.73 KiB) Viewed 516 times

Untitled 3.png
Untitled 3.png (288.33 KiB) Viewed 516 times


Was wondering if anyone has experienced this before and knows how to fix this.


I've had the blackmagic pocket camera 4k for two months now. This is the first time this has happened.


Recorded on 12:1 BRAW. SAMSUNG SSD T5 500GB.

Sigma 18-35mm
Offline
User avatar

rick.lang

  • Posts: 11956
  • Joined: Wed Aug 22, 2012 5:41 pm
  • Location: Victoria BC Canada

Re: ISO problem? Weird light flicker/flash BMPCC4K

PostTue Dec 03, 2019 6:37 am

More details (about the configuration and exactly what is changing and how you made the changes) are needed.
Rick Lang
Offline

Sean van Berlo

  • Posts: 207
  • Joined: Wed Jul 01, 2015 6:33 am
  • Location: The Netherlands

Re: ISO problem? Weird light flicker/flash BMPCC4K

PostTue Dec 03, 2019 11:20 am

I've had this happen before with that exact lens and the Viltrox ef-m2 adapter, it was the aperture opening up for me very quickly and then stepping down. Went away when I bought the Metabones. Could that be it?

Return to Cinematography

Who is online

Users browsing this forum: jerrygladh and 70 guests