- Posts: 13
- Joined: Mon May 10, 2021 9:12 am
- Location: Osaka, Japan
- Real Name: Omar Espinosa
Hello community!
This is my first post here as I'm starting to research some workflow between Resolve and color grading for game engines/CG renders. So if there are any mistakes on how I'm formulating this issue please let me know.
We come from making our grades in Nuke and it is very common that the content we are working with has values that go above the range of 0-1 (or in Davinci's case 0-1023). So something that I do almost all the time for testing is importing an HDRI or EXR file that has values above 1 and then modify the exposure to reveal the extra detail that bright spots may hold.
After taking a look at how to make Davinci use a Linear colorspace and the viewer a REC709 color transform I'm still a little bit confused about the fact that the only answer right now for modifying the exposure is adjusting the gamma/gain/offset dials which is not necessarily the math that I'm looking for. So any guidance on how to do a proper exposure adjust (using F-stops or densities or something along those lines) will be greatly appreciated.
On another matter which I think is more important than the above would be the fact that when I import an HDRI/EXR image, I can see on the scopes that my values are being clipped at 1023 and thus killing all that extra information on bright areas.
I just want to understand a bit better how the content would need to be prepared for HDR grading then or if there's a way to have Resolve to not clip those values. Here's a quick screenshot showing what I mean, where if I lower the exposure in Nuke you can see how the values on the sun are preserved.
Sorry for the long post, any guidance on this would be greatly appreciated! Thanks a lot and stay safe ;D
This is my first post here as I'm starting to research some workflow between Resolve and color grading for game engines/CG renders. So if there are any mistakes on how I'm formulating this issue please let me know.
We come from making our grades in Nuke and it is very common that the content we are working with has values that go above the range of 0-1 (or in Davinci's case 0-1023). So something that I do almost all the time for testing is importing an HDRI or EXR file that has values above 1 and then modify the exposure to reveal the extra detail that bright spots may hold.
After taking a look at how to make Davinci use a Linear colorspace and the viewer a REC709 color transform I'm still a little bit confused about the fact that the only answer right now for modifying the exposure is adjusting the gamma/gain/offset dials which is not necessarily the math that I'm looking for. So any guidance on how to do a proper exposure adjust (using F-stops or densities or something along those lines) will be greatly appreciated.
On another matter which I think is more important than the above would be the fact that when I import an HDRI/EXR image, I can see on the scopes that my values are being clipped at 1023 and thus killing all that extra information on bright areas.
I just want to understand a bit better how the content would need to be prepared for HDR grading then or if there's a way to have Resolve to not clip those values. Here's a quick screenshot showing what I mean, where if I lower the exposure in Nuke you can see how the values on the sun are preserved.
- Resolve_ClampedValues.png (771.08 KiB) Viewed 656 times
- Resolve_ClampedValues01.png (712.81 KiB) Viewed 656 times
Sorry for the long post, any guidance on this would be greatly appreciated! Thanks a lot and stay safe ;D