D.E.B.

[Elliott Balsley]

Why is D.E.B. disabled by default? In some cases, the image looks nearly unusable without it on. Is there any downside to it? Render speeds seem about the same with and without it. Here's an example of a shot that looks terrible without DEB. It's shot at 640 ISO, and the shadows are 3 stops underexposed. It looks even worse in motion, with the red dots moving around. This is a 100% crop JPEG, and below are the full-size JPEGs.

https://drive.google.com/file/d/0B52QuT8oHvtZZmR5b2h0OTNRNzQ/view?usp=sharing
https://drive.google.com/file/d/0B52QuT8oHvtZWG9NMV9URjlsNWs/view?usp=sharing

EDIT: I just realized the forum recompressed the attachments, so it's best to look at the full-size links on Google Drive.

 

[David Battistella]

It's not needed for every situation. This is why it is not defaulted to on.

that said,

if if you want it on every shot, it is easy enough to flip on ever shot in davinci resolve.

or.

open the clips in Redcine X turn it on for the first shot and apply that look to all of your shots.

 

[Elliott Balsley]

What are the drawbacks to using it on every shot, when it is unneeded?

 

[Blair S. Paulsen]

Trying to plan, what can you tell me...

Trying to plan, what can you tell me...

First off, huge thanks to Rob and his team for getting RRencode into a contemporary RedCineX-Pro build!

Second, is it true that the RR-X video outs are only able to do 1080/2K, not UHD/4K? I've got 3 UHD/4K monitors I really hoped to the RR-X hardware could drive solo, rather than needing a beefy late model GPU in the mix and enough PCIe lanes to support both the RR-X and the bomber GPU. Was I incorrect in thinking the RR-X would give me real time, full decode monitoring/program out in UHD/4K over 3G-SDIx2?

In my little dream world an RR-X in an expansion chassis that also housed 2x 4-drive SSD RAIDS tied to any Thunderbolt laptop would be a rock solid real time platform for working directly with the R3Ds displayed on an outboard UHD/4K program monitor driven directly out of the RR-X and the GUI on the laptop. You could flypack the laptop and the TB2 expansion chassis, hire a UHD monitor local and viola…

Does the RR-X have the potential to be the enabling technology for real time operations with most Dragon formats, scaled on the fly to UHD or 4K including letter boxing on fit to width for rasters up to 2160x3840/60P? Just trying to determine if I should just cram a box full of Titans and swear at Windows or if, fairly soon, RR-X could do enough heavy lifting to make RT UHD happen, assuming fast file access (500MB/s sustained reads minimum)?

Cheers - #19

 

[John Brennick]

Have they enabled D.E.B with RR-X yet?

 

[David Battistella]

What are the drawbacks to using it on every shot, when it is unneeded?

DEB, Stands for Dragon Enhanced Blacks, mainly, it works on the red channel in the shadow areas to make a low light shot have similar color noise characteristics as the LLO OLPF, (the STH will still be a bit grainier side by side in low light)

where re there is enough signal in the blacks, with DEB on you are changing the red channel characteristics, there are instances when you want that channel to stay exactly the same under normal lighting conditions.

You have to do your own testing but there could be specific shots where you don't want or need to touch the red channel.

I I leave it off and turn it on above 1280 ISO which, for me, is the point at which I think it needs it, but I have pushed well exposed stuff to 1600-2000 ISO where I've left it off. It depends.

 

[Christoffer Glans]

Shouldn't D.E.B be applied only when shooting in low light with Dragon? A bright sunlit day wouldn't really have a reason for shooting high ISO and essentially there wouldn't be any noise.

 

[Marcus Friedlander]

Sorry to revive an old thread but I've been looking into a similar question.

Is DEB just for STH? Is it destructive to your image if you are using LLO?

 

[David Battistella]

Sorry to revive an old thread but I've been looking into a similar question.

Is DEB just for STH? Is it destructive to your image if you are using LLO?

Yes. It is meant specifically for Red Channel noise in the shadows and underexposed areas with the STH OLPF installed.

If you apply this to LLO captured footage it will have an adverse effect on the red channel.

It might be a better rule of thumb to use DEB with STH and the denies slider with LLO.

 

[Marcus Friedlander]

Great to know! Thanks so much David!

 

[Jay Silver]

Here's another question that maybe the red team can answer.
Will DEB ever work with our Red Rocket-X card?
Would be amazing if we could transcode with the RR-X and have DEB working.

 

[Mark van Coller]

Here's another question that maybe the red team can answer.
Will DEB ever work with our Red Rocket-X card?
Would be amazing if we could transcode with the RR-X and have DEB working.

+ 1 on this. It really would make a difference to most of my transcodes. 90% of them look significantly better with D.E.B enabled and I use the LLO exclusively.