Gold Rare Gravity Stop Exposure Zones

Discussion in 'Video Effects' started by raregravity, 28 Sep 2024.

  1. raregravity

    raregravity Silver II

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    ADMINS don't know if this is the right place to post it or the way I should make the post but... I know it's defo not something we should just give to non-gold because of the nature of the dctl itself :oops::oops:

    MASSIVE UPDATE:
    Power grade, DCTL, READ ME doc & LUT, with screenshots.
    Tested on Red Komodo (-X), Arri (mini LF, Amira) and Panasonic (S-series mark I and II)
    Tested on Portkeys, Atomos, Video Assist 12G & SmallHD (SmallHD has it already but still tested it)

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    Credit goes to a certain patent made by a great cinematographer; I just can't wait for updates or to buy a SMALLHD monitor. He was the DP for ''EL CONDE'' (great film btw worth a watch).
    If you want to expose your next motion picture like Greig Fraser is going to do for DUNE PART 3 then use this DCTL. I recommend watching:
    and going to his site for more information on this zone system

    In DaVinci with your log footage in the color tab create 4 Nodes:

    Exposure of Choice* [enable] > CST [enable] > DCTL [enable] > CST [disable]

    ARRI/RED/PANASONIC COMPATIBLE

    Exposure:
    I use RAW for exposure or the HDR wheels mapped to the space and gamma I shot on using the Global to adjust.

    First CST:
    Input Log Color Space [of Choice/camera] - works with ARRI LOG CSTs
    Input Log Gamma [of Choice/camera] - works with ARRI LOG CSTs

    Output Log Color Space [same as input]
    Linear [ALWAYS LINEAR DON'T CHANGE]

    Tone Map [Off]
    Gamut Mapping [Off]
    Advanced: Forward OOTF [Off], Inverse OOTF [Off], Use White Point Adaptation [On]

    DCTL:
    Add my DCTL to your DCTL collection if you don't know how to do that, there's a 50 second tutorial by Barrett K. regarding DCTLs.

    Second CST:
    Up to whatever you want, if you just want to use it as an exposure checked just set a CST and disable the node.

    *[Raw/HDR/Stop-based-dctl/Primaries Wheels]

    AND VOILA YOU'VE GOT RGSE ZONES ON DAVINCI
    If you want to use it as a LUT on your monitor of choice you must export in x33 or it won't work.


    I will be updating this dctl and post multiple versions with better results in terms of luminance mapping in relation to the color selection and the dynamic range. They might/would be compatible with MonoNodes DCTLs, I shoot arri, panasonic and red so I know it works for those. If you have suggestions or ideas for implementations that you would like to see send me a message. I'm also working on multiple other DCTLS and Powergrades that will be P-V exclusive (I think...).

    Please DO NOT SHARE OUTSIDE P-V, I MEAN IF YOU DO GOOD LUCK BRO :oops::oops::oops:
    Please LIKE & COMMENT let's talk and figure out what other tools we can build together that no one has provided or built yet that would help newcomers or people that are trying to make it.
    ========================

    EDIT:
    RGSE Zone Chart:
    Insert this chart in davinci, or print it for your monitor or... MEMORIZE IT it's super easy. I will make other variants that will go in accordance to the subsequent versions and update. This will teach you what stop each color represents.

    EDIT II:
    If I do get access to more cameras, I will make a more distinct mapping for the ELZONE and just provide the lut since I'm aware this can be quite a pain for people that just want to use it in camera rather than in davinci. Or it might not export correctly etc so to reduce points of failure I'll try and upload that too
     
    Last edited: 28 Sep 2024
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  2. imteee

    imteee Silver IV

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    Oooh boi what a DCTL geek you are!
     
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  3. raregravity

    raregravity Silver II

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    hahahahaha:oops::oops::oops:

    I'm working on a lens Powergrade collection wait for that, it's going to be crazy. I don't know if people will like it or not and it might take a while since I have to buy/trade/exchange multiple lenses. I've been able to capture a footage on 3 summiluxes and 9 sigma lenses to build this powergrades, can't get my hands on signature primes is just not happening (plus no shoot I've been on can afford them or what to shoot on them).

    The idea is to build a lens character builder for people like me that prefer to shoot like Fincher & Erik SUPERCLEAN and then build upon that in post. i.e.: atlas orion, cooke, helios, soviet lens collection, rehoused series A/B/C, specific film lensing based on a film and what not.

    Much more difficult than I anticipated to make tbh and barely have the time but its WIP. I'll try not to give up.

    Note: some of these dctls/PWGr. might require people to have scatter or mononodesPWGr/DCTLs for the best results and accuracy


    TLDR IM YAPPING TOO MUCH: Most of us can't afford to buy/rent PEAK CINE GLASS for personal projects so... don't worry shoot with a CPL + ND Filter and your favourite canon/sigma/sony lens then fine tune and perfect the look you want to go for in post.
     
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  4. imteee

    imteee Silver IV

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    Brother I don't mind your yapping haha!! Keep cooking! Your contribution is a bless for this community
     
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  5. loadpt

    loadpt Silver II

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    Thanks Bro
     
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  6. Snook

    Snook Master

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    Thanks , I will check this out. Just curios how the LUT can work with exposure. I have been using False Colors for years and it get's me where I need to be but wondering how these "Luts" would work in camera or on a Monitor. I always thought false colors was needed to actually show you the different exposure areas and was actually needed in a monitor's OS system in order to work, not a LUT.
    Does this actually work when exporting a LUT and trying to use it in a Monitor? Do the color actually change when you change your exposure so you can nail the 18%? Hope that makes sense but I do not see how the color would change as the exposure changes to actually use this?
    Thanks.
    Have you actually made a LUT and tried this in a Monitor?
    I understand how it works in Davinci and have another similar one to get correct exposure but never tried using a LUT on a monitor bc I just do not see how it could actually work...
     
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  7. raregravity

    raregravity Silver II

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    arigato :oops::oops:
     
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  8. raregravity

    raregravity Silver II

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    Ok, so I'm not going to explain the entirety of the process but if you do want an in-depth explanation I recommend sending me a message or I can direct you to a few videos that would explain it better or better I could link you the P4T3NT for this exposure system.
    It's simple in concept but complex to explain if you want to know how it works on a fundamental level, because the code is quite straightforward.

    I have tried it on the MINI LF, AMIRRA, KOMODO, KOMODO X, PANASONIC S5, S5II, S5IIX. It 100% works, I will upload screenshots and perhaps clips to show it works if need be.
     
  9. raregravity

    raregravity Silver II

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    A quick still and clip of it working
    https://imgur.com/a/rgse-z0n3-ymSLORQ
    @Snook
    remember this is a tool, in my honest opinion it's much superior to False Color and unpar with looking at a waveform with a proper range of stops, plus you are constantly aware of your TRUE DYNAMIC RANGE.
    Will upload a chart to the original post for people that don't know how the values work.
     
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  10. Snook

    Snook Master

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    Thanks, I know it is a tool and works well, I was asking about how it works as a LUT in a monitor.
    I use a similar DCTL in Davinci but was wondering how it works with a monitor and the LUT. Can you share your LUT you made?
    Thanks
     
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  11. raregravity

    raregravity Silver II

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    I knew this was coming so I just updated the google drive and added stills to it.

    You have your log image coming from your camera into the monitor, the lut is just a mathematical mapping of luminance and color for the values given by your camera so what the lut does is simply change what you are viewing based on the rules set by the lut.

    For example I could make a lut/dctl that regardless of what you are shooting everything will always be GREY except anything that is clipping beyond your sensors dynamic range. So you'd only be able to see into the darkest shadows and the brightest highlights XD if that makes sense obviously that would not be ideal, but hopefully that makes sense.
    I'm also not the best teacher, in my brain it all makes sense but then I can't explain it to people :oops::oops::oops: sorry if it didn't help.
     
  12. Snook

    Snook Master

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    Thanks, I see you put the LUT in the drive now
     
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  13. raregravity

    raregravity Silver II

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    Yup, so everyone gets a functional powergrade, lut, dctl.

    This is not workflow optimised but I will make another one that will be a simple compound node for those that are lazy and just want it to be DEAD-EASY to just toggle. Although it's pretty straight forward if you already know how to do parallel nodes and feed the info you want to whatever node of your choice.
     
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  14. Snook

    Snook Master

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    Just tried your LUT in FCPX and will try in my camera monitor tomorrow, looks pretty cool!! Thank you.
    I am wondering when use it in my monitor if I should have my LUT off or ON when exposing for Skin tones and they should be around green to slightly yellow I also imagine...
    Thank you
     
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  15. raregravity

    raregravity Silver II

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    OFF, ONLY USE IT ON LOG FOOTAGE.
    REC709 has a "false latitude" unless you only shoot in r709 and grade from that then that's a different story and I think it should be fine
     
  16. curiousdude

    curiousdude Gold Nova

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    Trying to understand what you're going for here. Are you essentially trying to duplicate EL Zone (recent Atomos firmware updates include EL Zone to keep up with SmallHD, btw)?
     
    Last edited: 26 Oct 2024
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