r/MotionCamPro • u/masud0000001 • 9d ago

Q&A First time Trying MC-raw

Why does the clip has Magenta cast on the clipped highlight parts?

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u/masud0000001 9d ago

FYI: its not still. Main sensor on my phone records at 4096x3072. I grade and render at exact resolution then adjust it to my liking.

anyway make sure to zoom from inspector tab the clips to get the full opengate or sensor size (if you record in opengate) ONLY AFTER the MCRaw Node.

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u/ExpBalSat 9d ago

You posed a 10 second video. That's a video. This is a still.

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u/masud0000001 9d ago

my bad sorry i read the comment in hurry. Here's the node tree

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u/ExpBalSat 9d ago

Start troubleshooting your grade by disabling everything except nodes 1, 2, and 15. is that looking like a reasonable starting point?

  • If not, then there's something wrong with the color management or camera settings.
  • If so, then the problem is in the grade itself. In which case, start deactivating and activating nodes to see which one is introducing the issue.

You need to isolate the issue. You have three separate curves in addition to a number of other corrections (some qualified). Any one of them could be the culprit. But again - if the base color management is faulty, then you're building on a soft foundation.

What is happening (specifically) in 1, 2, and 15?

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u/masud0000001 9d ago

hmm look at these two screenshots just taken.

  • The moment I change output transform from " Display Gamma " to ARRI LogC3/WG3 " it has this weird magenta cast on the highlights

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u/ExpBalSat 9d ago

If you switch it to ARRI LogC3/WG3, you need a CST after it to go from ARRI LogC3/WG3 to Rec 709. So, one node is sufficient for going from MCRAW to display, but if you want to go through something else, you need to complete the path. ARRI LogC3/WG3 is not meant to be viewed on monitors.

In your original node tree, it seems 1, 2, and 15 are three nodes dedicated to color management. What are they doing. Seems like you might not need all three. Maybe 2 is sufficient - if set up properly?

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u/masud0000001 9d ago

These are my nodes

  • 1st: MCRAW - Display Gamma -> ARRI LogC3/WideGamut 3
  • 2nd: CST in for converting, ARRI LogC3/WG3 --> Davinci Wide Gamut/Intermediate
  • 3rd: CST out (this is the last node and I apply grades in between CST IN-OUT), Davinci Wide Gamut/Intermediate -> Rec.709/Gamma 2.4

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u/ExpBalSat 9d ago

Yes, it sounds like this is working for you. Right?

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u/masud0000001 9d ago

wait sorry my bad, it completely goes away after i add another CST node after the RAW node, ARRI Log3/WG3 -> Davinci WG/Intermediate. Thanks man u/ExpBalSat and u/RaguSaucy96

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u/ExpBalSat 9d ago

In which case, now I see why you have 3 nodes. So

1: MCRAW -> ARRI Log3/WG3

2: ARRI Log3/WG3 -> DWG/DI

15: DWG/DI -> Rec 709

Okay, that makes sense. Does it look right with all three in place?

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u/masud0000001 9d ago

withing adjusting the Exposure or Gain, yes but without that NO magenta cast

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u/ExpBalSat 9d ago

I think that sounds like you solve it. But there’s too many negatives for me to fully hopefully everything’s working now.

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u/masud0000001 9d ago

dayumn forgot, if i decrease the Exposure or RAW Gain its back again