Banding

Viewing 14 posts - 1 through 14 (of 14 total)
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  • #201573
    terry silberman
    Participant

    Once again the ole banding issue. Is there any tricks to creating a grad without getting the banding. The aliasing feature in Action doesnt get rid of it. Was in a HD project and needed a simple grad. Ended up having to do it in Photoshop. Any suggestions.

    #215425
    pixelmonk
    Participant

    If you have it, I would suggest the Tinder plug-in.

    #215426
    burhan
    Participant

    Are you working in 8bit or 10. You might try 10bit. You could also try a gausian blur on Y

    #215427
    nikola
    Participant
    VOODOO wrote:
    Once again the ole banding issue. Is there any tricks to creating a grad without getting the banding. The aliasing feature in Action doesnt get rid of it. Was in a HD project and needed a simple grad. Ended up having to do it in Photoshop. Any suggestions.

    tinder is good, another trick is to add some grain

    #215432
    Martin Furness
    Participant

    I dont have tinder and I tried the blur but still didnt work. A blue to black grad. The blue no likely and creates a problem. Ill have to continue to investigate.

    #215428
    filip
    Participant

    What if you create a big frame, 4k at 12 bits, and then resize it down?

    #215433
    Martin Furness
    Participant

    Ill try that and see what happens. Thanks.

    #215430
    Andre Pereira
    Participant

    noise 😀

    #215434
    Martin Furness
    Participant
    joni wrote:
    noise 😀

    ?

    #215435
    John Jenkins
    Participant

    That is one thing Quantel boxes do very well. Create seamless grads in 8 bit.

    #215429
    bnw
    Participant
    VOODOO wrote:
    Was in a HD project and needed a simple grad. Ended up having to do it in Photoshop.

    Be interested to know what was different about the Photoshop grad, compared to the Flame one… maybe Photoshop dithers its gradients.

    Adding a tiny bit of noise is the way to fix it. Needn’t feel bad about it either – right from the invention of digital systems people with pointy heads have known that you have to add a little noise to mask quantisation artifacts – but people rarely bother. Well, people other than Quantel, who even have a fancy trademarked name for what everyone else calls dither 🙂

    Any kind of monitor calibration makes this worse, annoyingly, especially in 8 bit. Can you guys see the banding on a 10 bit broadcast CRT while working in 12 bit in Flame?

    #215436
    John Jenkins
    Participant

    It was (is) called “Dynamic Rounding©”

    #215424
    McArdell
    Participant
    #215431
    Andre Pereira
    Participant

    adding grain/noise – to form some sort of dithering effect – just enough to kill the banding issues (gaussian – i think – something fine and smooth) usually help

    commonly for gradients – id just add grain to the darker color – in your case black – sometimes id try to add it just on the luma

    and… sometimes multiple shades/hues – might be a solution – eg skyblue+blue+deep blue+royal blue…til gets to black… er… bottom line chances are from color A to color B sometimes do produce banding issues and youd have to introduce like an “intermediate” color to smoothen the gradient.

    oh blending modes are also quite useful to produce “nice gradients”

    whew – 🙄 – hope theres something useful here

    😀

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