Terrible banding on RED footage after rendering. Please have a look

[Sascha Haber]

Are you working from the RED files or from Prores encodes ?
I can see the banding, yes…

A slice of color…

DaVinci 8.0.1 OSX 10.7
MacPro 5.1 2×2,4 24GB
RAID0 8TB eSata 6TB
GTX 470 / GT 120
Extreme 3D+ WAVE

http://www.saschahaber.com

[Monica Rubio]

Hi Sascha,
You should be able to download the files from the links. Thanks.

[Prathvish Hegde]

i think it is compression issue i had the same issue when i got a project to work on which was converted from red by a editor to mov, the footage was a 2k mov it had the banding .so later i asked him to give me the R3D files and xml and connected to the R3D in resolve and all was fine and you will have a better source to work.

prathvish hegde
colorist

[Monica Rubio]

Thank you Pratvish,
I am actually grading the 4k R3D files. The banding appears after rendering out on the QT. I have rendered out as DPX and the problem persists.. I can not see anything wrong on my CRT or the Color window in Resolve. Any ideas????????
X
M

[Joseph Mastantuono]

What are your source settings?

Also, is the banding appearing when you play the qt on your broadcast monitor? Or only on your computer monitor?

Just some thoughts.

Joseph Mastantuono
http://www.goodpostny.com
Color Grading & Post Production Consulting

[Gabriele Turchi]

from r3d to a compressed format on a n image like that is quite normal have banding because of the compression …but rendering DPX should not introduce that at all …

is you grading monitor 10 bit ? because computer motor are mostly 8 (or 6) and that might be the issue …(on a 10 bit there is way less banding …)

g

Davinci Resolve Control Surface
MacPro
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2 Red Rocket
GT120+GTX470+GTX285
24GB RAM
HD Dreamcolor
Panasonic 58PF Plasma

[Monica Rubio]

Here I go again,

Here is a still of my source settings and also two stills (dpx) of before (very bright/ no banding) and after(darkish, sooo much banding). It is a zip file so you can download quicker.

Although the banding on my CRT 10bit is slightly less noticeable, it is still very visible.

Thanks for your input guys.

files.me.com/neath_films/9rntco

M

[Prathvish Hegde]

try exporting a uncompressed mov and see if u see the banding,i also think it is bcoz of compression.i would love to test by myself but dont have a mac resolve handy.

prathvish hegde
colorist

[Arty Black]

I would try to export within 32 Bit for those banding critical passages. Your DPX export is just 16 Bit … That might reduce quite a lot of the Banding.