EPIC Noise/Grain

[Lee Dashiell]

I just shot a piece in DC that was lit well however even under good lighting conditions, dark suits or jackets have a lot of noise or grain in them. Blacks have lots of noise. Any ideas? Never had this on my RED ONE MX.
I'm on software Build_2_v2.0.2

 

[Joe Kleber]

Hi Lee

Would you mind posting the meta data for one of your problem clips?

 

[Ryan De Franco]

Very curious. Red has somewhat noisy blacks but I've always liked the grain structure, snap crackle pop is what defines motion picture for me...

...but that's always been under low light, dim-but-not-black subjects. Please do post your meta data and/or a frame grab, very curious about this.

 

[Jason Comparetto]

I have the same problem. What could be causing this?? I've done black shading many times now.

 

[Johnny Friday]

Is it a moving/pixelated noise? What redcode did you shoot at?

 

[Lee Dashiell]

I'll post some pics in a bit. I shot in Redcode 10 and then 8 with no change in the noise. Shot a commercial for a hospital last week under the same build with no changes and it was grain free. I'm rendering now, having to use NEAT Video to clean up this mess. I'll post some images ASAP. Luckily, NEAT is solving my immediate problem.

 

[Johnny Friday]

I've had takes of the same EXACT thing where i see bubbling noise jumping all around in the blacks, but on the next take it's clean---and all has been blackshaded etc...I looked at my redcode and see i was at 12:1.....not sure if that has ANYTHING to do with is since i think that's equivalent to Redcode 38 as in R1....

bottom line is i see this as well---if in fact this is what you are talking about?

 

[Jason Comparetto]

I use 12:1 and 10:1 and 7:1 sometimes. No improvement. I seem to get consistently poor blacks. It seems like some of you are actually getting varying results, which is even weirder!!! Anyone gotten this to work?

 

[Steve Sherrick]

Can you guys post R3D snapshots of 5-10 seconds of material with metadata. I'm assuming that blackshading steps were done properly and that things were lit under the correct ISO right?

Also, are you using any of the new filters RED has provided in Redcine-X Pro?

 

[Johnny Friday]

Steve, you mean Alchemy, Sturation and film look?
....for me it's right off the RAW R3d....natural light outdoors etc...I'll see if i can actually find a clip---as i am going through 18 hours of material now....and on a roll. Maybe i can digress to find one or come across one later---mine are very infrequent, but there.

 

[Lee Dashiell]

Just pulled this from the newest Redcine Pro Build 8

Noise is everywhere on the jacket. Mostly all blue channel. His Jacket is dark, but as you can see, there is plenty of light. I shouldn't be having this problem.

 

[Lee Dashiell]

The noise on his jacket dances around like crazy!! Can't deliver this to my client.

 

[Gunleik Groven]

That jpg doesn't tell me much...

1 sec of r3d would tell me a lot.

What ISO/Kelvin is that?

What are your development settings?

How did you grade it?

THAT would tell me a bit more

Cheers!

G

 

[Richard G]

i've experienced the same results shooting on the Scarlet last night.

i had to over-expose in camera and bring back down the exposure in post.

but i'm thinking maybe a plug-in is needed to deal with this type of noise.

let me know what you find good sir.

 

[Gunleik Groven]

But this image frankly looks quite underexposed...

That's why an r3d - even single frame, would be of great help...

 

[Richard G]

that could be the case. when i look at the white shirt, it could be around + 2 stops.

 

[Gunleik Groven]

What exactly do you mean by "overexosing in camera" ?

Cheers

G

 

[Jason Comparetto]

It means he's shooting it as if his ISO 200. I thought about doing that, too. But then I realized I just paid $40 grand for a camera that claimed to shoot at ISO 800. I stood in denial.

 

[Sidney L. Plaut]

could be a combination of factors - tungsten, underexposed, not applying a curve when in RedlogFilm... etc

or it is a debayer setting issue, - redrocket is more noisy than a fulldebayer software version. Halfres good is waay more noisy for instance than other full settings.... etc

Edit: the blue channel noise is evident of tungsten underexposed, remember you are already 2 stops under on the blue channel when you white balance to tungsten light on a silicon Cmos sensor camera. - so if you are a couple of stops under and raise the exposure in post, you have to add 2 whole stops to the blue, which at some point ofcourse will introduce noise.

 

[Justin Marx]

I had the same issue and it was because of under exposure.