Noisy blacks

[Chris McKechnie]

Wondering if this is the normal amount of noise you guys see at only 1k ISO. Did black shading calibration once camera was up to temp.

See below for bigger file

 

[Nick Gardner]

Picture is to small to tell.

 

[Chris McKechnie]

Don't know why it did it so small...will try again

 

[BigLu]

Can you provide an R3D still frame grab that would be the best way to help ya.

Also light source, lens t-stop, iso settings.

all the best
luis
send the R3D frame grab to my email ill check it out right away

googulplx@aol.com

 

[Chris McKechnie]

Try this one

 

[jimhare]

What color temp?

 

[Brook Willard]

We'll need to see an R3D still frame to be able to give you a useful answer.

 

[Chris McKechnie]

Will do

 

[Chris McKechnie]

Click to download files.me.com/perfectday/0x35qj

 

[Randall Brown]

Yup looks about right to me. There isn't a ton of light hitting the sensor. Open in RedCine X and look at 320 ISO, and you can get a feel for what the sensor sees. Looks like tungsten lighting too, so that makes the problem even worst. Run it through Neat Video. You will have great footage on the other side with a lot less noise. Mysterium-X is a great sensor, but its not noiseless...

 

[Steve Sherrick]

The simple answer - the shot isn't exposed properly. Also, be careful of color temps of your lights.

 

[Chris McKechnie]

So should I be looking at the RAW feed from the monitor or a modified LUT version?

 

[Matt Ryan]

So should I be looking at the RAW feed from the monitor or a modified LUT version?

Watch the histogram and the goal posts. Expose as far to the right of the histogram without clipping and you can bring everything down in post. As for color temp, the lower you go the more noise your going to get unless you expose it perfectly.

Noise goes away if you crush the blacks.

 

[Nick Gardner]

Just crush the blacks. click, click, done.

Nick

 

[Matthew Scott]

The simple answer - the shot isn't exposed properly. Also, be careful of color temps of your lights.

I'm curious as to how differently the blacks, or background should have been exposed in this scene?

 

[Matt Ryan]

I'm curious as to how differently the blacks, or background should have been exposed in this scene?

I would say at least a 2 stop separation between the background and the talent then 4 between the blacks and the talent. You can then bring everything down to your desired level and retain the separation.

 

[Matthew Scott]

I would say at least a 2 stop separation between the background and the talent then 4 between the blacks and the talent. You can then bring everything down to your desired level and retain the separation.

Awesome! Thanks

 

[Chris McKechnie]

Yea I was going for a big difference between the foreground and background. I really wanted them to pop, but I guess I should have brought up the bg a bit.

 

[Brook Willard]

Your camera metadata shows that you shot with the following settings:

4600˚ K
9.76 Tint
1600 ASA
+.1 FLUT
+.5 exposure
1.2 saturation
-1.8 brightness
.8 green gain
8:1 compression

The relevant settings here are the ASA, FLUT and exposure values.

1600 ASA is pushing by 1 stop.
.1 FLUT is pushing by .1 stop.
.5 exposure is pushing by .5 stop.

In other words, the shot is 1.6 stops underexposed. The noise is exacerbated by the 8:1 compression.

You effectively rated the camera at 2500 ASA. This is exactly what I'd expect a dramatically underexposed and highly compressed shot to look like.

Your lighting would be completely fine if you'd exposed properly.

 

[Matt Ryan]

Awesome! Thanks

Just make sure to light with contrast and separation in mind. If you shoot it flat, adjusting levels will adjust everything as a whole. The more separation you have, the more fine control you'll have over your individual low, mids, and highs. RED has given us 13.5 stops of dynamic range, so we might as well use it to it's full potential.