Author Topic: Powergrade for Resolve  (Read 644 times)

togg

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Powergrade for Resolve
« on: January 09, 2020, 10:53:34 AM »
Sooo!

You export the dngs from MLV APP. Then what?

By following a couple of juan melara tutorial on youtubes and using is film lut I changed my post production process again!

No more 3d export lut in the preferences. I've moved into the color transform nodes.

I made 3 powergrades at the moment, the general idea is to put your wb in the raw panel, bmd film, +2 exposure (not needed if you expose correctly MAYBE) then first node a color transform to bmd to alexa log c just because it's more cool, then your corrections node, then another color transform where you bring it into rec709, apply the tonemapping options there, and then if you want add SOME of the nodes (not the contrast curve one) of the kodak poower grade that melare recreated.

One of the 3 is only the color transform and some clean contrast, another the color transform and some lifted contrast, a third the color transform and the extra kodak nodes that make film saturation and stuff.

Try them out!

https://www.mediafire.com/file/ojcqpc76pax6brz/MLV_dngs_color_transform_power_grades_for_davinci_resolve.zip/file

Dmytro_ua

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Re: Powergrade for Resolve
« Reply #1 on: January 09, 2020, 01:50:36 PM »
Could you share a preview image of the RAW file and your edit result?
5d3 1.1.3 exp | Canon 16-35 4.0L | Canon 50 1.4 | Canon 100mm 2.8 macro
Ronin-S

togg

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Re: Powergrade for Resolve
« Reply #2 on: January 09, 2020, 03:52:21 PM »
Could you share a preview image of the RAW file and your edit result?

yes of course! What's your usual workflow with raw images? It would make a better comparison.

A basic Rec709 from the raw panel.




The 3 powergrades I did.






cmh

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Re: Powergrade for Resolve
« Reply #3 on: January 29, 2020, 09:05:58 PM »
The grade 1.50.1 (third still I presume) is pretty simple but it has really great skin tones on an EOS M (the reds are leaning towards the orange tho).

My previous workflow for a quick first pass grade:
I used to enable Pre Tone Curve in the raw project settings, leave the color space to rec.709/sRGB and up the gain to +20 in the raw tab with few other settings: Saturation -5, Color boost +10 to temper the red channel a bit, Highlight -30, Shadows +10. Finally a gamut mapping node: Gamma sRGB, Tone Mapping Luminance, Max Input 1000.
It doesn't look bad but the problem is that if I do a daylight white balance of a mixed lights environnement, skin tones might have to be fixed separately.

Your grade is pretty spot on right off the bat. Thanks for sharing. It's a nice improvement compared to what I used to do, I'll try to fiddle a bit with it.

cmh

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Re: Powergrade for Resolve
« Reply #4 on: January 31, 2020, 09:32:04 AM »
Testing this powergrade real quick in a mixed light scene (It's an EOS M, 1488x1866 squeezed, 12 bit).
I denoised, changed the white balance, upped the gamma a notch and that's it:
Link: https://www.youtube.com/watch?v=3IDODpqf9bM

togg

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Re: Powergrade for Resolve
« Reply #5 on: February 13, 2020, 12:27:25 AM »
The grade 1.50.1 (third still I presume) is pretty simple but it has really great skin tones on an EOS M (the reds are leaning towards the orange tho).

My previous workflow for a quick first pass grade:
I used to enable Pre Tone Curve in the raw project settings, leave the color space to rec.709/sRGB and up the gain to +20 in the raw tab with few other settings: Saturation -5, Color boost +10 to temper the red channel a bit, Highlight -30, Shadows +10. Finally a gamut mapping node: Gamma sRGB, Tone Mapping Luminance, Max Input 1000.
It doesn't look bad but the problem is that if I do a daylight white balance of a mixed lights environnement, skin tones might have to be fixed separately.

Your grade is pretty spot on right off the bat. Thanks for sharing. It's a nice improvement compared to what I used to do, I'll try to fiddle a bit with it.


That is so nice to hear! :) The video looks great! I'm happy to have contributed some to the color science of ML raw :P Even if only by putting together stuff from other sources.

To recap what this powergrades basically do : 

- Use the transform LUT available into Resolve to map luminance and saturation in a more filmic way.

- Brings exposure up by 2 stops in the raw panel to basically increase the dinamic range and match what you see inside MLV App.

- Adds some contrast on a middle node (plus a color shift).


All of this can be vastly improved imho. There're tons of ways the tone mapping could be better probably but that's serious stuff. The 2 stops hack bring out some excessive noise, but how to do it differently ?

It would be nice to have a thread with better organized collection of power grades for Resolve. On the end that's what defines the image and it can be pretty discomforting for a new user to have to do this from scratch.

cmh

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Re: Powergrade for Resolve
« Reply #6 on: February 21, 2020, 05:03:46 AM »
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That is so nice to hear! :) The video looks great! I'm happy to have contributed some to the color science of ML raw :P Even if only by putting together stuff from other sources.
Yeah I'm in no way a colorist but I just wanted to say that despit not beeing "neutral" your powergrades are pretty natural and photographic, there's usually not much feedbacks on the ML forum and I wanted to show my appreciation.

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All of this can be vastly improved imho. There're tons of ways the tone mapping could be better probably but that's serious stuff. The 2 stops hack bring out some excessive noise, but how to do it differently ?
I don't think that restoring the two stops in the raw tab increases noise as it just compensate for the bmd gamma which brings everything all the way to the left.
As far as I don' try to recover information like upping the shadows, it's ok (but then I'm using an EOS M that is known to have to pretty bad dynamic range so maybe I'm wrong).

I previously tried multiple tonemapping workflows, a decent way was to linearize everything and use Corona highlight compression with Tonemapping Tools in Fusion (filmic and Reinhardt are also available) but that was pretty slow and required me to up the gain instead of ISO otherwise I ended up with muted colors.
Using a colorspace transform node to go from bmd to rec.709 is way cleaner anyway and the gamma mapping is customizable enough for me.

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It would be nice to have a thread with better organized collection of power grades for Resolve.
I'd love to see such thread, I would participate.

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On the end that's what defines the image and it can be pretty discomforting for a new user to have to do this from scratch.
As for empowering newcomers on this topic, as cynical as it sounds, the large majority wants the youtube "cinematic" aka slap a LUT like an instagram filter. There's a steep learning curve, it would have to be prefaced by how to read the scopes instead of eyeballing it on uncalibrated monitors, yadi yada.