Posts: 5
Threads: 2
Joined: Jul 2018
Posts: 5
Threads: 2
Joined: Jul 2018
https://www.openexr.com/
https://www.openexr.com/documentation.html
https://opencolorio.org/developers/index.html
Hi Gunther, given your disinclination to shoot bracketed HDR timelapse due to the hassles, I wanted to offer this workflow as an example for you to try out purely for the sake of color quality and see if it interests you. If so, maybe you would want to add EXR support to LRTimelapse.
Example workflow:
1. Shoot bracketed HDR timelapse
2. Batch process in Photomatix to merge bracketed photos and export as 32 bit OpenEXR in Adobe RGB or ProPhoto colorspace.
3. Bring EXR files into After Effects
4. Using AE OpenColorIO plugin, transform ProPhoto/Linear to ACEScc
5. Apply color corrections Lumetri plugin
6. Apply final OpenColorIO plugin transform from ACEScc to Rec709 or sRGB as preferred
Suggested workflow using LRTimelapse assuming OpenEXR support could be added:
Steps 1-2 above
3. Use LRTimelapse to deflicker EXRs - to do this, LRTimelapse would need to add support for:
a) Reading the EXRs (not difficult using open source OpenEXR library)
b) Ideally, add a way to LRT to properly display the EXRs - to do this, perhaps use OpenColorIO (also open source) to build in a few preset transforms for displaying the EXRs in LRT:
- Typical input spaces: Linear / [AdobeRGB | sRGB | ProPhotoRGB]
- Typical output spaces: ACES 2065-1 (RRT) to Rec709/BT1886, or just straight through to 709/1886
Just adding support for reading EXRs (#3) would be enough to leverage LRT solely for EXR deflicker and sidecar XMP, in which case the EXRs could be loaded into After Effects, to proceed with steps 3-6 for further color grading.
But optimally if OpenColorIO was also in LRT, then the images could also be displayed in a pleasing way in LRT so the user could also do other basic exposure adjustments across the timelapse sequence.
https://www.openexr.com/documentation.html
https://opencolorio.org/developers/index.html
Hi Gunther, given your disinclination to shoot bracketed HDR timelapse due to the hassles, I wanted to offer this workflow as an example for you to try out purely for the sake of color quality and see if it interests you. If so, maybe you would want to add EXR support to LRTimelapse.
Example workflow:
1. Shoot bracketed HDR timelapse
2. Batch process in Photomatix to merge bracketed photos and export as 32 bit OpenEXR in Adobe RGB or ProPhoto colorspace.
3. Bring EXR files into After Effects
4. Using AE OpenColorIO plugin, transform ProPhoto/Linear to ACEScc
5. Apply color corrections Lumetri plugin
6. Apply final OpenColorIO plugin transform from ACEScc to Rec709 or sRGB as preferred
Suggested workflow using LRTimelapse assuming OpenEXR support could be added:
Steps 1-2 above
3. Use LRTimelapse to deflicker EXRs - to do this, LRTimelapse would need to add support for:
a) Reading the EXRs (not difficult using open source OpenEXR library)
b) Ideally, add a way to LRT to properly display the EXRs - to do this, perhaps use OpenColorIO (also open source) to build in a few preset transforms for displaying the EXRs in LRT:
- Typical input spaces: Linear / [AdobeRGB | sRGB | ProPhotoRGB]
- Typical output spaces: ACES 2065-1 (RRT) to Rec709/BT1886, or just straight through to 709/1886
Just adding support for reading EXRs (#3) would be enough to leverage LRT solely for EXR deflicker and sidecar XMP, in which case the EXRs could be loaded into After Effects, to proceed with steps 3-6 for further color grading.
But optimally if OpenColorIO was also in LRT, then the images could also be displayed in a pleasing way in LRT so the user could also do other basic exposure adjustments across the timelapse sequence.
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