Hello Grant, let’s try to go over all of your questions:
“If AE’s colorspace is set to none, and you are working with, let’s say Sony S-Log3 footage. If you use the footage to create the comp, what colorspace does AE use? Does it assume S-Log3? What does it mean to be none?”
When the colorspace in After Effects is set to “None”, it means AE is not color managing anything. It won’t make any assumptions about the footage’s color profile; it will simply interpret the raw values of the footage as they are.
Additionally, when set to “None”, AE will use your project’s color management settings, typically either Linear Color or Gamma 2.2, depending on how you’ve configured the project. Be aware that this will result in AE making a linear interpretation of footage that may have been shot in a log color space, such as S-Log3. This can lead to improper dynamic range interpretation, incorrect gamma, or other color artifacts (such as dull or overly flat footage).
“Is ‘None’ a default limited colorspace?”
Yes, it can be considered limited because AE isn’t taking advantage of its color management features. When the project is set to “None”, AE does not apply any color space transformations. In the specific case of log footage like S-Log3, it will perform a linear interpretation of the log data, which can lead to clipped highlights, loss of detail, or incorrect color rendering.
“Do you need to switch to color management and specify S-Log3?”
Yes, for footage shot in log formats (like S-Log3), it’s important to enable color management in AE and set the appropriate working space based on your final output or delivery format (e.g., Rec.709 or Rec.2020).
To ensure AE interprets your footage correctly, you should also manually interpret the footage as S-Log3 by going to Interpret Footage → Main, and under the Color Management tab, choose the correct input profile, which would be S-Log3 in this case. This allows After Effects to convert the log data to a display-referred color space correctly, avoiding the reading issues described above.
“What if you’re using a ProRes 444 export of Sony S-Log3 footage in a None colorspace project?”
ProRes files do not embed metadata that tells AE which log format (like S-Log3) was used for encoding. So, if your project’s colorspace is set to “None”, AE will treat the ProRes file as raw linear data without any color management. This could lead to incorrect gamma and dynamic range interpretation, similar to the issues described with S-Log3 footage.
To handle this correctly, you would still need to manually interpret the ProRes footage in AE, assigning it the S-Log3 profile (via Interpret Footage → Main → Color Management). This will ensure that AE knows the footage is in S-Log3 and can apply the proper conversion to your working color space.
Hope this helps!
Best,
Ivan Eldredge G.