Histogram RGB clip versus zebra

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BennoZ

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Histogram RGB clip versus zebra

PostMon Oct 03, 2022 2:27 pm

In the latest update for the Pocket and the Ursa Broadcast there are red, green and blue squares in the histogram when one of this colors is clipping which I like a lot. I'm always filming with zebra at 100% and guessed it can be turned of now, but there is difference in zebra and histogram, I'll explain:
When the red, green and blue squares are all off lot's of time I see zebra; how can that be? Because there are no colors above 100%, so also there should be no zebra.
Also sometimes it's reversed: one of the squares are on and I see no zebra.
Can anyone explain this behavior?
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Steve Fishwick

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Re: Histogram RGB clip versus zebra

PostMon Oct 03, 2022 5:07 pm

I would imagine because zebras are based on luminance not RGB gamut. I don't know how the histograms are implemented in BMD cameras and whether they are based on the current lut or absolute sensor saturation, since I don't use them or false colours, I'm too old fashioned and an old ENG guy :) But I would not recommend, personally 100% zebras - it is much better to use 90%, so you have some head room, to allow for inaccuracy of metering. It would be grand too if the Broadcast particularly had dual zebras but it is quite workable as is.
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BennoZ

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Re: Histogram RGB clip versus zebra

PostMon Oct 03, 2022 5:35 pm

Thanks for your answer.
I'm an old fashioned ENG guy too and always used 100% so I'm sure really nothing is blown out. Everyone uses his own preferences. Someones even set it to 70% :shock:

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