Color banding with D810

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  • Updated 3 years ago
Hi,
i am using a Nikon D810 for about 1 month and i'm noticing that when i start contrast/color adjustments or dodge/burn is very easy to see a lot of color banding, before with my D610 i did' notice it.
In Lr files looks better than Ps.
I use Prophoto and 16Bit.

Thanks in advance.
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Lorenzo Damiani

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  • frustrated

Posted 3 years ago

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Steve Sprengel, Champion

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Can we see a screenshot?

What versions of LR, PS, ACR are you using?
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Lorenzo Damiani

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I have applied just a soft vignette and them some dodge with a light yellow over the sun, you can se a huge banding. I tried with prophoto but doesn't look different compared to adobe RGB. I am suing the latest versione of LR and PS, i have the Creative Cloud contract.

Thanks
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Lorenzo Damiani

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Here is bigger. Don't know why on LR if i do harsher adjustments i don't see banding, while in PS is very easy to see it.
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Chris Cox

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The banding I see there is from the blurred mask edge, plus possibly your display profile and the fact that your display is only 8 bit/channel.
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Lorenzo Damiani

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i am using a iMac late 2013 using the monitor profile called "iMac", i have never profiled it. I'm thinking to go back to windows and get a good display. Do you have any suggestion?
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Chris Cox

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The platform/OS has nothing to do with it.

The display profile can exaggerate quantization problems if it is not well made, but Apple usually creates pretty decent display profiles.

And the usual answer to quantization banding is to add a small amount of noise.
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Steve Sprengel, Champion

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Are the bands there at 100%? Is the image over-sharpened?
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Lorenzo Damiani

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not sharpened at all cause form lr i set 0 because lumonisty mask works better if it not sharpened.

What you mean 100%, sorry i am italian. By the way is not a crop if you mean that.

Thanks
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Steve Sprengel, Champion

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100% means zoom to 100% or 1:1. Your "larger" image is 21,28%. I am trying to understand if the bands disappear when the screen-resampling isn't occurring.
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Lorenzo Damiani

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Yes, you always see it.
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Lorenzo Damiani

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Don't know if depends from my settings...
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Steve Sprengel, Champion

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I would guess the vignetting and dodging operations are working in 8-bit colorspace even though the image is 16-bit. I don't have good advice about what to do.

The image is dark, can you brighten it, perhaps using a non-linear gamma operation using the center slider in Levels, do the operations, then darken it by reversing the gamma adjustment?
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Lorenzo Damiani

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Thanks, unfortunately i don't understand exactly this: then darken it by reversing the gamma adjustment?

The best solution i'm using is to add 12 noise uniform to every mask, it helps a lot
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Chris Cox

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That's probably a bit too much noise. Usually 1 or 2 percent is enough.
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Steve Sprengel, Champion

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If you use the Level center slider to brighten the image, then you'd need to dim it back down using the Levels center slider to make it same darkness, again. I don't know what the numeric formula is, though, I'd just eyeball it, myself.

Adding noise does help obscure edges, yes. I wasn't sure exactly what you were doing to suggest what to add noise to.
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Lorenzo Damiani

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maybe my monitor could be the problem?
Imac late 2013 27"
Do you have any suggestion?
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eartho

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why are you using Ps to create a vignette? If you have Lr and a raw file, your vignetting should be done there to avoid banding issues.
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Lorenzo Damiani

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Yes i tried, but then when you go back to ps the banding appears.
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eartho

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I pretty sure it has everything to do with using a ProPhoto profile on an sRGB display. Try adding the vignette in Lr and then export as AdobeRGB and sRGB and see if the banding is still present.
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Lorenzo Damiani

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Do you suggest me to work on Srgb work space? I can't see the benefits of the prophoto profile in my screen, right?
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Steve Sprengel, Champion

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The benefits of working using ProPhotoRGB/16-bit are that you can make overall adjustments in brightness and saturation without losing precision as compared to sRGB or 8-bit.