How do I remove Yellowish patches on my shots and noise in the blacks

[Yinka Edward]

HI, I shot on the epic recently and I noticed a yellowish patch around the images though more obvious on the faces of the actors. I also noticed an usual noise in the blacks. The annoying thing was that it was difficult to get rid of in post production. Has anyone experienced this before? Do I need to reset the epic camera?

The picture I attached is a screen shot of the problem I had with the yellow patches. Please take a look at the man on the right of the picture. You can see that he has some yellow patches on his face. I'm just wondering if anybody can advice me on what to do to get rid of the yellow patches ( that is when shooting and not in post production). Thanks a lot.

 

[Shane Kelly]

When I've seen this before it usually has to do with makeup, not how it's applied but the type used. There was a discussion here some time ago and I think it was related to a particular brand of makeup. I haven't seen this effect in a while though. Was this redcolor3/redgamma3?

 

[Bob Gundu]

Post an R3D frame. It will tell much of the story. My initial reaction is that your saturation settings are pretty high.

 

[Matt Ryan]

My guess without seeing an R3D is the saturation was boosted and it's a mix of makeup and lighting color temp.

If you can post an R3D snapshot we can take a look. I'd reset all Epic settings to factory and also do a blackshade once the camera warms up to operating temp.

 

[John Geronilla]

Matt might be on the right track. Saturation was boosted on one of my shoots and created those splotches on our actor's faces.

 

[Andy White]

HI, I shot on the epic recently and I noticed a yellowish patch around the images though more obvious on the faces of the actors. I also noticed an usual noise in the blacks. The annoying thing was that it was difficult to get rid of in post production. Has anyone experienced this before? Do I need to reset the epic camera?

The picture I attached is a screen shot of the problem I had with the yellow patches. Please take a look at the man on the right of the picture. You can see that he has some yellow patches on his face. I'm just wondering if anybody can advice me on what to do to get rid of the yellow patches ( that is when shooting and not in post production). Thanks a lot.

http://www.reduser.net/forum/showthread.php?106142-Yellow-patchy-skin-tones

This thread may be of some use.

 

[Yinka Edward]

View attachment 47088Here is what the raw image looks like.

 

[Matt Ryan]

post the r3d grab for us to download.... In Redcine X, click on R3d snapshot button right below the viewer window next to the snapshot button (looks like a camera with R3D written below). Then upload it to dropbox or we transfer and post the link here for us to download. Otherwise we can't help you.

 

[Yinka Edward]

I'll send the R3D as soon as I can get access to it. Thanks

 

[Andy White]

I'll send the R3D as soon as I can get access to it. Thanks

So, any updates on this? Did you reset the R3D metatdata?

 

[Will Keir]

Neat Video for the noise. Pretty impressive software.

 

[Gavin Greenwalt]

Assuming you aren't using CameraRGB or some other legacy colorspace I would attribute it to over-saturating at the debayer phase of your processing. I prefer to leave my saturation at 1.0 for the RAW processing and then add any extra saturation down at the end of the chain (where the film grain settings are).

 

[Costelloe Michael]

I know that the question was how to remove the yellow which i will leave to you post guys but as far as not getting it there in the first place definitely watch the saturation. I wouldn't apply that in camera as it is easier and better IMO to control it in post.

Also check make up by eye, if you can see it, so can the camera. We always use airbush for critical makeup and always have an eye out for over made up actors esp. older ones who sometimes insist. I had an issue on the early sensor on the Red One with an actress who was used to favouring a 'warmer' colour of make up. She basically equated looking a bit tanned with healthy and under the Brutes (nine lights) we were using looked orange. I sent her back to make up for 40 minutes and got an 80A filter for the camera. This removed the excess red spectrum from entering the camera. As the sensor is naturally inclined to daylight and, these days at least, the ISO is 800 it makes little difference loosing a stop and a half.

Noise is usually from underexposure, once again I usually allow a scene to be lighter than I want the end product. As I control a lot of the post as I get to grade this is easy for me than for some who want to supply the finished image. But if the sensor is well fed with light there is little chance of noise in a drama. Bringing the image down in post will crush the blacks and loose anything lurking there. If the image is darker and needs to be lifted the noise will be made more apparent. Denoise in Neat / Da Vinci if so.