I was just working on clip to remove some blemishes with the paint tool, something that I’ve done countless times. This time the round trip app sequence is slightly different and I’m running into a weird gamma shift that makes the replacement clip significantly darker.
The clip is from a Panasonic Varicam in V-Log. The edit is in Avid. I exported the clip from Avid as an EXR sequence with all color adapters disabled. In Silhouette I’m seeing the normal low-contrast log image, work on it, and then export it via an Output node into a new EXR sequence. Usually that can be imported to replace the original clip and everything matches.
However, in this case today, when I import the EXR sequence either in Resolve or Mistika the resulting import is darker and appears to have regular 2.4 gamma on it. But nothing has been specified during import to do that. There are no LUTs, no IDTs, etc applied.
If I do open the first frame of the rendered sequence in Photoshop, it looks proper in terms of V-Log footage.
So it’s not pixel values, it must be a color space handling issue. I’m assuming that Avid may have added some weird color space identifiers into the files during export. Those don’t appear to affect Silhouette itself or Photoshop, but appear to be picked up by Resolve and Mistika. And would have had to be copied by Silhouette from the source to the destination.