- Post
- #1543727
- Topic
- AOTC 35mm historical preservation (WIP) - scan complete, fully funded, entered final processing tweaking stage
- Link
- https://originaltrilogy.com/post/id/1543727/action/topic#1543727
- Time
Working on a specific color calibration for this feature alone as it seems to need a slightly different tweak than most of the other stuff scanned.
A few samples comparing 35mm to the DVD, BD, HDTV broadcast.
The blue (Pantoran?) girl on the left is INSANELY hyper saturated on the actual 35mm, finally seeing what I recalled in the theater and what fell so flat on the DVD, BD and HDTV broadcasts (didn’t get to check yet whether the UHD with the wide gamut palette restored her colors or not).
However, this part at least, with the blue girl, is not the fault of altered color grading (although it still is a bit) but more that her colors are simply way beyond anything regular sRGB/REC709 standard gamut colors can show. I posted the 35mm in both sRGB and ProPhotoRGB wide gamut and you can see how the sRGB clips her saturation right back to the basic home versions.
Note that you can only see her proper colors if you are viewing on a wide gamut display set to wide gamut mode and with a proper display profile and FULLY color-managed viewer. Otherwise it will just look the same as the 35mm standard gamut version or completely incorrect one way or another.
It turns out the her colors seem to be too intense for the scanner used to be able to pickup so I had to manually adjust her colors (shows that it can be important to have the reference print in hand when dealing with scans, if I did not, then either she (as well as the “A Long Time Ago…” intro title, would be way undersaturated, either that or they would have been fine but then lots of more neautral and low saturated stuff would have picked up too strong of an aqua cast. No matter what I do I can’t get the calibration to produce the intense enough colors for her and that title without then making lots of other stuff too saturated. I think it means the scanner just could not see those colors or that the software in the scanner unfortunately remapped the raw data to a somewhat too small colorspace.
It turns out that the home versions are maybe so much tealified in some scenes as more that they were magentified actually. And then lack of wide gamut clipped a few colors badly like her and the “A Long Time Ago…” intro and, to a lesser extent, some other aqua/blu/cyan/teal/turquoise shades and to an even lesser extent a few dark reds and such, throughout. In this scene they seem to have made the Twilek a more wild and intense green though, at least compared to this particular 35mm print. Maybe to make up for lack of blue richness in the Pantoran??
AOTC comp:
35mm ProPhotoRGB wide gamut:
35mm sRGB:
BD REC709 Gamma 2.4:
DVD: REC709 Gamma 2.4:
HDTVD REC709 Gamma 2.4: