Problem about Cinema4D render outputs

[Delizade]

Hi,
I wrote a problem related to this topic before, and I couldn't fix a problem for a while that prevent me to get proper outputs.

(rendered with standard cinema 4d renderer)
1) Rendering with 8bit: output image seems okay.
2) Rendering with 16 bit: both Picture Viewer and output file seems dithered
3) Rendering with 16 bit and ACES document color space: Picture Viewer is okay, but output PNG file has same dithering problem.

My brain is melted so sorry if I'm missing here but is there anyone knows what is going on here please? How can I get smooth 16 bit output?


8bit PNG output:

8 bit

16bit PNG output:

16 bit

16 bit PNG output with aces color space of the document:

Screenshot of 16bit Aces render view:

16bit aces render on the picture view

C4D file:

DitheringProblem2.zip

(24.93 MiB) Downloaded 81 times

[elsksa]

Hi,

(rendered with standard cinema 4d renderer)

Are you referring to Cinema 4D physical renderer or Octane's output via Cinema 4D frame buffer?

There isn't any issue with output / export.
Dithering is prone to happen under some conditions and with some file format (not EXR).

• Octane's Camera Imager features a dithering option that is very handy (and does work) - aimed at integer file formats.
• 16-bit PNG, or rather, PNG entirely is subject to avoidance. This page details about proper file format.
• ACES will not make a difference and is also subject to avoidance. There has been numerous posts about it on this forum and I've written about a superior and recommended alternative here.

[Delizade]

Hi,

(rendered with standard cinema 4d renderer)

Are you referring to Cinema 4D physical renderer or Octane's output via Cinema 4D frame buffer?

There isn't any issue with output / export.
Dithering is prone to happen under some conditions and with some file format (not EXR).

• Octane's Camera Imager features a dithering option that is very handy (and does work) - aimed at integer file formats.
• 16-bit PNG, or rather, PNG entirely is subject to avoidance. This page details about proper file format.
• ACES will not make a difference and is also subject to avoidance. There has been numerous posts about it on this forum and I've written about a superior and recommended alternative here.

(To understand the problem, I used C4D standard renderer only, not Octane)
After rendering, I was getting outputs with "bending" (I learned that its name was that) problem. On the Lightroom again they had same problem.
But I realized that on the Develop mode of Lightroom they were good. Exporting them produced good enough result (I mean 16 to 8bit process lost).
And another confusing thing was if I render with Octane (16 bit output) it seems okay in picture viewer. But If I use C4D Denoiser, after denoising it was producing bending result.
If my monitor settings are wrong, I shouldn't see smooth results.

Anyway, it seems that I should read and learn a lot of documents about the whole thing.
Thank you for your time.

[elsksa]

You're welcome.

On an 8-bit display panel, or "fake 10-bit" one, it will be rather inevitable.
Just letting you know this is the OTOY Octane forum section, titled "Maxon Cinema 4D" in regard to the Octane for Cinema 4D plugin.
My replies are targeting an Octane rendering workflow.