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  • Hey all, just changed over the backend after 15 years I figured time to give it a bit of an update, its probably gonna be a bit weird for most of you and i am sure there is a few bugs to work out but it should kinda work the same as before... hopefully :)

How does HDR mode work on the Scarlet?

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Brennan Klensch

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In camera HDR has always made me curious, so naturally, when I saw it on the Scarlet as a stills feature, I wanted to know how RED integrated it into their system?
 
We've talked with TED on the SU Podcast, and its all TBT (To be told, at a later date)

though he has said, its not bracketing they use (Bracketing is what still HDR is made from, different exposures)
 
they can really pump the taking speed of the bracketed exposures,, say for scarlet S35 like 72 fps.. say grabbing 10 shutter speed bracketed frames in like 130 milliseconds .. that would be an awesome case for HDR stills world..
and I bet it would work for motion if bracketing like 3 bracketed images per frame.. then Epic and 2/3" scarlets would be more useful in that case..
and imagine running high speed shutter on those brackets won't give you stuttering image coz motion blur will be created coz of the 3 to 1 combine.. if not enough might add some in post.. but that would render these cameras awesome tools even if their HDR was not that ideal,, at least it will be kind of HDR motion images that is useful in most cases..

I really wish to see HDRI coming from these cameras with a very simple and low tech technique,,
 
I'm trying to remember which it is. But it's either the Viper or the Phantom which has an HDR mode. The manufacturer has a good white paper on how they accomplished it and would be a good point of research.
 
Mohammed, I don't see how they could bracket motion except digitally. I don't think the servos can adjust the aperture that quickly!

Still, a convincing digital effect similar to ISO metadata would be cool.
 
Gavin Greenwalt said:
I'm trying to remember which it is. But it's either the Viper or the Phantom which has an HDR mode. The manufacturer has a good white paper on how they accomplished it and would be a good point of research.
Click to expand...

its vision research.. for example this one:
http://www.visionresearch.com/index.cfm?sector=htm/files&page=miro_ex4

it has something they call EDR (Extreme Dynamic Range) you can see this feature on the bottom of the page on the specs list.. click on that feature and read how they do it.. didn't read it much.. will later..


Zach Gold said:
Mohammed, I don't see how they could bracket motion except digitally. I don't think the servos can adjust the aperture that quickly!

Still, a convincing digital effect similar to ISO metadata would be cool.
Click to expand...


Zach, they can bracket the motion with shutter speed not aperture size.. because these new camera's will be based on an electronic shutter.. which some camera's from sony can go beyond 1/10,000 of a second.. this very fast that you can see any moving object even if it was running very fast on front of super telephoto lens...
and I think you can change the shutter speed rapidly from frame to the next..
also most HDRI stills techniques are based on the exposure change from shutter speed coz changing the aperture will vary your depth of field for each exposure for the same image..
 
That EDR sounds like something different. And I really want to say that my memory says it was Grass Valley for the camera. The white paper mentioned that they use it for Space Shuttle Launches.

EDIT: Spoke too soon. This does sound like what I was thinking of. http://focus.visionresearch.com/?p=56
 
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