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spinachworld
Inspiring
June 13, 2024
Question

Color correcting iPhone 15 footage

  • June 13, 2024
  • 1 reply
  • 5652 views

I'm working with footage a client provided that was shot on iPhone 15.  See attached screenshot.  This was a B camera for a theater shoot, and while the A camera (Canon DSLR) was totally clean, the iPhone appears really hot and the colors are distorted.

 

In the room actual the lighting was not that white.  The woman's hair and face look blown out and if you look at the screen behind her, you can see the bottom of the image has a blue-green tint to it and it's got moire effect.  In real life that was a black and white photograph, which was faithfully rendered by the other camera.

Not sure why this happened, as I thought the new iPhone cameras were supposed to be really great, but I need to correct it and match to the other camera as much as possible.  I'm already working with Lumetri Color, but I haven't found the right combination yet.  Any suggestions on which parameters to tweak would be helpful - I admit that color correction is not my strongest suit.

 

Edited to add that I have tried the color management and tone mappings settings in Lumetri, and it didn't have a significant effect on this footage.

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1 reply

R Neil Haugen
Legend
June 13, 2024

That looks like HLG put on a Rec.709 sequence. Perhaps?

 

If so ... Lumetri panel, SETTINGS tab ... the one named Settings.

 

Set auto detect log and auto tonemap to on.

 

Work on a Rec.709 sequence, and use only Rec.709 export presets.

 

If a preset says HLG or PQ in the preset name, only use them for sequences with the same sequence color space.

 

Rec.709 export presets do not have a color space in the preset name.

Everyone's mileage always varies ...
spinachworld
Inspiring
June 13, 2024

See attached screenshots for the sequence settings and the Lumetri Color settings.  Can you advise what might be wrong?

R Neil Haugen
Legend
June 13, 2024

Re-read my post, as apparently, you didn't actually read exactly what I wrote.

 

The Lumetri panel, Settings tab, period. You don't have the section with auto detect log twirled down, so we can't see if you have that set or not.

 

Next ...DO SO. And deselect the over-ride clip option.

 

By the way, DO NOT put screengrabs in the "drag and drop here" box ... drop them directly into the text reply area, so we can see them in the text here without having to click to open something else.

Everyone's mileage always varies ...