Epic-W Green Pixel Banding in skintone

[alvin renz]

I been noticing a green banding in Epic-W towards the skin tone.

I have tried all 3 DSMC2 OLPF with the same outcome.
I know that the HELIUM Color Science is not out yet but take a look at this, Do I have a bad sensor? I include the R3D files in the last link.

Shot on ISO 800, Canon 50 Cine lens. RG4 DC2

IMAGE 1
https://d17oy1vhnax1f7.cloudfront.n...1M00/Screen Shot 2016-10-31 at 3.39.32 PM.png

IMAGE 2
https://d17oy1vhnax1f7.cloudfront.n...1V45/Screen Shot 2016-10-31 at 3.39.02 PM.png

WHOLE IMAGE:
https://d17oy1vhnax1f7.cloudfront.n...1506/Screen Shot 2016-10-31 at 3.54.36 PM.png

R3D FILES
https://cl.ly/2r1v1t2G0x12

 

[Phil Holland]

Very, very, very well known CA from the Canon 50mm T1.3. Stop that lens down to T4-T5 and you'll see that go away for this specific lighting scenario and contrast ratio.

 

[alvin renz]

Thank your for the reply Phil, But I brought down the image to show more of the problem. is this a Chromatic Aberration?
you coud see it clearly how it lines up between the whites and green.

 

[Björn Benckert]

That, where the image break, thats color science.

 

[alvin renz]

And this is using RGW/L3G10 with basic S-Curve and Saturation

 

[Tim Daust]

Björn

I suggested on FB group for him to try REDWideGamutRGB/Log3G10 but its still showing up.

 

[Bob Gundu]

CA fringing is usually green or purple. This definitely looks like CA to me. Its an easy test to do against white.

https://x-equals.com/cringe-at-the-fringe-chromatic-aberration-in-lightroom/

 

[alvin renz]

It also shows in a weird way, usually when I see CA it blends smoothly with no sharp edges.

 

[Phil Holland]

Didn't see that bit Alvin. Can you PM me a link to the R3D so I can look closer?

 

[alvin renz]

Didn't see that bit Alvin. Can you PM me a link to the R3D so I can look closer?

I will send it now.

 

[Bob Gundu]

It also shows in a weird way, usually when I see CA it blends smoothly with no sharp edges.

Thats messed up. I wonder if its the 12:1 compression? If so, it doesn't usually look like that though.

 

[Sabovic Adis]

It also shows in a weird way, usually when I see CA it blends smoothly with no sharp edges.

Is it showing when exporting to 16 bit TIFF?

 

[alvin renz]

Is it showing when exporting to 16 bit TIFF?

I can see it inside REDCINE-X Pro

 

[Sabovic Adis]

I can see it inside REDCINE-X Pro

Don't look at it then. :rofl:

Sorry, I had to say this. :biggrin:
Maybe it's just a single glitchy frame (shot), can't tell...:biggrin:

 

[Phil Holland]

Yep. This is a weird one. I've looked at the R3D and haven't seen anything like that before. I'd open up a support ticket from here. Might be fixable via firmware, might not.

 

[alvin renz]

Yep. This is a weird one. I've looked at the R3D and haven't seen anything like that before. I'd open up a support ticket from here. Might be fixable via firmware, might not.

Thanks Phil for your time. I forward the R3D file to RED support, waiting to hear back from them.

 

[Tim Daust]

Thanks Phil for your time. I forward the R3D file to RED support, waiting to hear back from them.

Alvin, maybe send some other r3d files like you originally sent me too

 

[alvin renz]

Alvin, maybe send some other r3d files like you originally sent me too

Got it, I just sent it through reply on Email. Thanks man!

 

[Graeme Nattress]

So two issues: CA from the lens visible around the edges of the face. That is typical with a wide-open lens. The green jagged pattern is not normal and Red Support need to see this. Please make sure a support ticket is filed and mention that I've seen the R3D.

Graeme

 

[Daniel Dïaz]

Same problem here!

I have a RED Scarlet-W and today I've noticed about this problem. Almost all the footage I shoot today is unusable. Also, I've been checking all my latest footage and I found this problem in a more subtle way in other scenes.
I'm using XEEN lenses.


Some examples:

https://we.tl/Ri85frekFa