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[philipp.chudalla]

from time to time I experience a single white pixel in my footage. sometimes only for the duration of a single frame, sometimes a red, almost transparent pixel for more frames.
no matter if opened in speedgrade or colorfront on set daylies.
recording to prores 4444 in log c.

its no problem to fix this in post, i´m just curious, if there is a way to prevent these.

heard of other productions with the same problem

any thoughts on this?

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[Michael Borenstein]

Generally Dead pixels don't behave like this.  Is it possible to send me a sequence with both of these artifacts so I can further analyze this?

mborenstein@arri.com

Regards,
Mike

[philipp.chudalla]

Thank you very much, our Posthouse (Cinepostproduction Geyer Köln) will send you some Files next monday.

Regards,

Phil.

[Michael Borenstein]

Thanks Phil.  I'll respond directly to the post house when I see the images.

Regards,
Mike

[JesseKorosi]

Hi Michael,
I am just curious what ended up being the reason for this issue?  Any incite would be appreciated.

Thanks,
Jesse

[Rainer Fritz]

thats some kind of radiation. an ionised particle for example in front of the lens somewhere. I saw this a lot of times, specialy on dark sets.

[Michael Borenstein]

It's what we call digital dust.  It comes from high energy particle radiation contaminating the sensor.  It should happen only on 1 frame, not over several frames, and very very very intermittently.

Regards
Mike