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K
KM Aerial Views
Participant
January 24, 2020
Answered

Feathering color corrections when splitting a clip...

  • January 24, 2020
  • 3 replies
  • 994 views

My question is this.  If I have a clip taken from my drone of an orbit around a structure, I am trying to bring up the shadows of the backlit side...so I cut the clip and add my corrections.  How do I feather that out as the orbit continues into the non corrected side of the clip and structure (because the lighting was naturally better on the subject).  I don't want that harsh color change as the split in my clip is passed?

 

Thank you,

Keith

This topic has been closed for replies.
Correct answer Steve Griffiths

Ok, so rather than option drag just put two identical copies of your drone shot into your sequence. One on V1 and the other on V2 directly above the V1 clip. Now add Lumetri to your V2 clip and colour correct it to be as you want for the backlit side.

Now trim this clip at the point you want the grade to go back to 'normal'. Add a dissolve so the V2 clip fades off to reveal the V1 clip.

 

Let us know how you go, or if you have any issues.

 

Or try it riklards way - that will work just as well.

 

 

3 replies

S
salvo34
Inspiring
January 25, 2020

good going, figuring that out with helpful peoples. What you said last, about keyframes, is what I use for that sort of really accurate transition. Manual opacity keyframes, usually zoomed way in to the frames, and using arrow keys to advance or go back one frame when you need to get those keyframes in place.

that would be the same stuff on v1 and v2 and the opacity on v2 primarily. believe it or not, sometimes it's cool to use contrary opacity on v1 and v2. Go down on v2, come up on v1.  kinda like your own manual cross dissolves.

 

🙂

 

S
salvo34
Inspiring
January 25, 2020

what kinda structures you flying around ? really giant stuff ?  maybe split the F stops between sun behind back and sun in face, and basically push pull the 'film' in post ( being digital you can do that ).

 

That way you just make one adjustment re: luma ( lift gamma gain Y values) and it should look nice.

 

??

    Richard TOULON
    Richard TOULON
    Legend
    January 24, 2020

    Try using an Adjustement layer and keyframe it's opacity. I'm not sure that you do it the right way . Why splitting your clip to apply a color correction ? Can you give more details ?

    K
    KM Aerial ViewsAuthor
    Participant
    January 25, 2020

    Steve's technique actually worked very well for what I was trying to do.  But while waiting to hear back from him, I researched keyframes and adjustment layers and it looks like I can actually figure out your way as well!  Thanks for the help!

     

    Keith

    S
    Steve Griffiths
    Inspiring
    January 24, 2020

    An easy approach is to duplicate your clip in your sequence - option drag the clip up into (say) video track 2.

    Make the necessary colour grade for the backlit side (to the V2 clip) and when you want to return to the 'bright side' grade add a slow dissolve back to the original clip on V1.

     

    You could instead (or also) add an animated mask to the V2 clip to roughly track the edge of the 'split' between the dark and light sides of the building so that you are basically created your own soft edge wip between the two vlips to combine the two different grades. This mask can be 'softened' in the opacity controls.

     

    Does that make sense?

     

    regards, SteveG

    K
    KM Aerial ViewsAuthor
    Participant
    January 24, 2020

    Thanks for your response.  Your top 'easy approach' makes a lot of sense to me, so I tried that.  But when I try and perform it, nothing happens.  I know this is operator error and I know I am doing something wrong...just don't know what I am missing?

     

    Thank you,

    Keith

    S
    Steve GriffithsCorrect answer
    Inspiring
    January 25, 2020

    Ok, so rather than option drag just put two identical copies of your drone shot into your sequence. One on V1 and the other on V2 directly above the V1 clip. Now add Lumetri to your V2 clip and colour correct it to be as you want for the backlit side.

    Now trim this clip at the point you want the grade to go back to 'normal'. Add a dissolve so the V2 clip fades off to reveal the V1 clip.

     

    Let us know how you go, or if you have any issues.

     

    Or try it riklards way - that will work just as well.

     

     

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