Hello all,
After searching online for the best way to process ML Raw files for use with VisionColor Osiris LUTs and not finding a clear answer, I decided to do some testing on my own and here's the process I've found to work the best for me so far.
The main problem with using VisionColor Osiris LUTs is that they're really "optimized" to work with their VisionLOG Raw and that means using AE for handling the Raw files which is slow. If you're using Davinci Resolve to handle your CinemaDNGs you're stuck with the BMD Film for debayering and gamma which is, well, made for completely different camera than the 5D MK III or any other Canon and applying the Osiris LUTs to BMD Film processed files gives a completely different colors from the ones you get using the VisionLOG.
Of course you could match the colors from BMD Film processed CinemaDNGs to the ones processed with AE and VisionLOG but this workflow is for the "one-click" type of work where you get 95% of the way with just applying the LUTs.
So here's my workflow, I hope you find it helpful:
1. Convert .mlv files using RAWMagic. Check 16 bit CinemaDNG Output. Check Vertical Stripes Correction.
2. Import CinemaDNG files into Davinci Resolve.
3. Debayering in Camera Raw:
Decode: Using Clip
White Balance: Choose Appropriate Value
Color Space: BMD Film
Gamma: BMD Film
Check Highlight Recovery
4. Create two serial nodes.
5. On the first node apply BMD Film to VisionLOG LUT 64 version. You may download the LUT here:
http://www.vision-color.com/visionlog/6. On the second node apply creative LUT such as VisionColor Osiris M31 for example or any other Osiris LUT.
7. Adjust exposure on the first node using
Camera Raw accordingly. I’ve found that you may need to adjust the exposure up to -2 on properly exposed files (incident light meter reading) in Camera Raw since the BMD Film to VisionLOG LUT will make the image much much brighter. I don’t think it’s a good exercise to underexpose during filming because it may introduce grain. At least in my testing properly exposed files at 800 ISO look clearer than the underexposed ones by one stop at 400 ISO. Mainly in the shadows. From what I’ve seen the BMD Film to VisionLOG LUT doesn’t blow any details on properly exposed files, so decreasing exposure in Camera Raw retains all of the original info in the file. Underexposed files show excessive grain after applying BMD Film to VisionLOG LUT.
8. Make any additional adjustments.
I need to test this a bit further but so far that seems the best way to me.
I'd love to hear what you think of the process and I hope you find it useful.
All best,
Goran
