CINEVERSITY

Hi Adam,

This is my personal view on this format. I have the feeling that many people are happy with it. PNG was developed for the web, to my knowledge, and way back in time, it was maybe sufficient for most tasks to use it. However, for over 15 years, we have used the Linear light workflow, and for many years now, we finally have ACES. Both are in 3D rendering linear and based mainly on OpenEXR.
Not that OpenEXR could have its little problems, like not flagged for ACEScg on default or not flagged as ACES 2065-1 as it should. I asked Adobe to implement that 1.5 years ago…

Here are three PNGs; two of them might cause trouble, missing full-color data based on baked-in transparency or missing which Color space was used. I labeled it so you know it is Adobe RGB; you might see a color shift when you set it correctly. Not much, but it is worth keeping in mind things are not, by default, sRGB.

Typically, many sources tell that color in Redshift is sRGB and data is Raw; for that to be true, the image must be coded. Raw is not sRGB linear, for example.
https://stcineversityprod02.blob.core.windows.net/$web/Cineversity_Forum_Support/2023_PROJECTS_DRS/20231012_PNG_variations_alpha_color.zip

False_interpretation.jpg

Color management and file formats are a must-have knowledge if quality is the target.

All the best

Thanks for the feedback, donatello.

So far, I went with your scene, which is static.

If you encounter that the Flag is a frame ahead, perhaps use a Point Cache or the Cloth Cache. But do not leave the forces on after caching.
There are typical problems when the Flag has a lower resolution than the "label," as the edge does not bend, which might show when it overlaps/intersects.
If you have a wild flag animation with significant differences in the mesh, go with a texture/material-based solution.
CV4_2024_drs_23_CAfl_01.c4d

All the best

Thanks for the reply, MFVis,

The main takeaway is to use whatever you like, but it might be too much if something doubles during rendering. Whereby GI provides more refined results, and AO is more of a hack. Anyway, whatever works.

But yes, I admit, based on the unnatural results of AO, I was never a fan of it.

Cheers