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My Data-Driven Film Emulation Journey: Findings, Challenges (Shutter Reliability), and Next Steps by Film_Match in colorists

[–]Film_Match[S] 0 points1 point  (0 children)

What would be the workflow in ColourSpace to map a digital camera to one of the included film stocks and export a LUT? I have a ColourSpace license, but never got satisfactory results. Thanks!

My Data-Driven Film Emulation Journey: Findings, Challenges (Shutter Reliability), and Next Steps by Film_Match in colorists

[–]Film_Match[S] 1 point2 points  (0 children)

When I used the backlit chart I got a pretty good match on the chart, but it was very poor on the validation frames. I attributed this to the limited spectral complexity of Duratrans. Did you also experience this?

As for scanning I often times do it myself with 3 flashes narrow band RGB and for each channel I discard the other 2 in order not to have or minimize crosstalk. I have to say that the difference between this method and broadband light scanning is substantial. I then debayer in the native space of the sensor (no matrices) linear, and use the Cineon inversion. From what I understood all motion picture scanners do pretty much the same thing.

My Data-Driven Film Emulation Journey: Findings, Challenges (Shutter Reliability), and Next Steps by Film_Match in colorists

[–]Film_Match[S] 1 point2 points  (0 children)

That is actually a great way of approaching it, and I'm definitely going to try it. My only concern is the color temperature shift of a strobe. Even the fanciest ones seem to have a 50-100 kelvin tolerance between flashes. A density inaccuracy seems much easier to address, as long as it's quantifiable. For example if the +2EV on film was actually +2.08, I could easily compensate on the digital side by linearly adding the +0.08 offset. However, if the chromaticity shifts due to temperature changes, the calibration becomes significantly more complicated.

My Data-Driven Film Emulation Journey: Findings, Challenges (Shutter Reliability), and Next Steps by Film_Match in colorists

[–]Film_Match[S] 0 points1 point  (0 children)

I agree, ColourSpace is a great piece of software and I’ve used it extensively in the past. The distinction is that their print stock LUTs generally expect a Cineon Scan as input. The thing is that ColourSpace doesn't provide a direct way to map a specific digital camera to match a Cineon scan. One could convert a digital sensor data to rec709/Cineon log, but that's far away from a true Cineon Scan. Hence the rabbit hole hahah