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Imagewerx
Inspiring
September 26, 2017
Question

Yi 4K red and orange the same.

  • September 26, 2017
  • 2 replies
  • 4654 views

Well almost the same.The pickup in the first half of this video is VERY red and the pickup in the second half is VERY orange,but as you can see they're almost the same colour.I don't remember them being like this before (but can't find any earlier examples).As you can see all other colours show near as [ ] perfectly.

Is there an easy way to get reds to be red again and oranges to be orange again as I don't know the correct way to do it with something like Adobe Premiere Pro?

https://www.youtube.com/watch?v=bUi67y73Un0​

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    2 replies

    E
    excited_Genie16B8
    Legend
    September 27, 2017

    They look very different colors to me.

    R Neil Haugen
    R Neil Haugen
    Legend
    September 26, 2017

    What are the two comparisons from? In detail, please ... as without a lot more information, there's no way to do anything but wild guessing.

    Neil

    Everyone's mileage always varies ...
    I
    ImagewerxAuthor
    Inspiring
    September 26, 2017

    The first one is not the same pickup in the video but is the same shade of red.The second one is the same orange pickup in the video and is the only still photo I have of it,but in real life it's a deeper orange than that.

    I
    ImagewerxAuthor
    Inspiring
    September 27, 2017

    Ok, I see now.

    Remember, imaging is always a garbage-in, garbage out process. So you have to work the entire chain of things.

    1. First, you need a consistent way to get the most accurate color you can from the camera at the time of capturing the imagery. Whether that's an Expodisc over the lens for setting white balance, a Xrite Passport Color checker, or just a gray card ...
    2. Your monitor for your computer should be running the sRGB color space profile, and if at all possible, calibrated with an external puck+software system like say the ColorMunki, i1 or Spyder units ...
    3. Learn to use the Lumetri panel, especially the scopes (and the Vectorscope shows your hues most delineated), to both read and set your color corrections.

    Now ... understand that even when you get good at this, different video players and browsers on different computer monitors will all show things a bit to a lot different. And get to work.

    Oh ... QuickTime player has some issues, PotPlayer & VLC are better among the free "simple" video players. YouTube does one conversion when uploading your media, which may or may not get the proper color and gamma for you, which will show correct if they do a re-encode. If they don't, go into YouTube's "editing" mode for your channel, select a vid, select retouch, save without doing anything ... and within a few hours they will re-encode.

    Neil

    Expodisc: Amazon.com : ExpoDisc EXPOD2-77 2.0 Professional White Balance Filter 77 mm, 82mm (Black) : Camera Lens Accessories : Ca…

    Passport: B&H Photo Video

    Xrite ColorMunki: B&H Photo Video

    i1 Display Pro: Amazon.com : X-Rite i1Display Pro - Display Calibration (EODIS3) : Photographic Light Meters : Camera & Photo

    Datacolor Spyder5Pro: B&H Photo Video


    Thanks for the links R Neil.I'm happy that the white balance is as good as it's going to for what I do,which is just a hobby.I really don't want to be spending 3 or 4 times more then the camera cost to try to get more accurate colours,and I trust my method of taking a photo of my hand and a piece of grey cardboard to make sure my monitor is properly calibrated,which as far as I'm concerned is as good as it's ever going to get for my eyes.
    The video camera (a Yi 4K) is set to auto white balance.I updated the firmware this weekend before shooting that lot,and interestingly before that even set to flat it had a very noticeable yellow tint to it and I had to dial in quite a bit of blue to get rid of it.It's now a lot more neutral and apart from contrast and saturation etc it now needs a lot less colour correction,and the image also seems to be more detailed than it was before.

    It's using the Lumetri panel I really need help with as apart from basic corrections it's all voodoo to me.So instead of just pulling and pushing here and there,can I sample the correct colour from the still photo and then adjust the video to that?

    Here's an even better example of what I mean,and I think this problem is worst with shiny red that it is with flat or matt red..........

    The same car of course in both images.

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