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thomland
Joined: 07 Apr 2008
Posts: 162
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Posted: Sat Feb 14, 2009 1:56 pm
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Here is a crop of the sky where the problem is. Don´t mind the noise.
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dragonfang
Joined: 03 Dec 2007
Posts: 63
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Posted: Mon Feb 16, 2009 9:30 pm
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Are you sure the display setting on your computer is set to 32 bit and not 16 bit? I don't see any banding, on my 32 bit colored monitor, but if I lower it to 16 bit I do see it.
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thomland
Joined: 07 Apr 2008
Posts: 162
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Posted: Tue Feb 17, 2009 12:48 am
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| dragonfang wrote: | | Are you sure the display setting on your computer is set to 32 bit and not 16 bit? I don't see any banding, on my 32 bit colored monitor, but if I lower it to 16 bit I do see it. |
I am not sure!
Use Imac and don´t know where the settings are yet.
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habman18
Joined: 15 Feb 2009
Posts: 144
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Posted: Tue Feb 17, 2009 2:09 pm
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Posterization: occurs when a region of an image with a continuous gradation of tone is replaced with several regions of fewer tones, resulting in an abrupt change from one tone to another. Also known as banding.(en.wikipedia.org/wiki/Posterization)
Post-processing only enhances this unwanted situation -- happens often in blue skies.
There's nothing wrong with the camera. It just so happens that your settings in-camera, along with the sensor, couldn't process ALL the tones in the sky in this particular image.
You mention it gets worse in Jpg when compared to RAW. Typical, as there's even less info in a Jpg file.
With a soft touch in Photoshop, you may be able to eliminate it, but it will take some time and energy: cloneing, healing, masking, layers, levels, curves, brightness, etc.
My two cents worth . . .
:)
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thomland
Joined: 07 Apr 2008
Posts: 162
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Posted: Tue Feb 17, 2009 2:19 pm
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| habman18 wrote: | Posterization: occurs when a region of an image with a continuous gradation of tone is replaced with several regions of fewer tones, resulting in an abrupt change from one tone to another. Also known as banding.(en.wikipedia.org/wiki/Posterization)
Post-processing only enhances this unwanted situation -- happens often in blue skies.
There's nothing wrong with the camera. It just so happens that your settings in-camera, along with the sensor, couldn't process ALL the tones in the sky in this particular image.
You mention it gets worse in Jpg when compared to RAW. Typical, as there's even less info in a Jpg file.
With a soft touch in Photoshop, you may be able to eliminate it, but it will take some time and energy: cloneing, healing, masking, layers, levels, curves, brightness, etc.
My two cents worth . . .
:) |
Thanks for reply!
I have bought a new D700 now and I hope this will be less of a problem in the future. This is 14-bit compared to 12-bit in the D80 so it should be able to prosses more imformation. Maybe.
Thanks to all for your help.
Best regards Thomas
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jeffbanke
Joined: 18 Dec 2005
Posts: 17468
Location: www.xlr8photo.com, The real California
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Posted: Wed Feb 18, 2009 11:55 am
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| dragonfang wrote: | | Are you sure the display setting on your computer is set to 32 bit and not 16 bit? I don't see any banding, on my 32 bit colored monitor, but if I lower it to 16 bit I do see it. |
I don't see any banding on either of my monitors, I run a CRT and an LCD specifically because I can see some things better on one kind, and other things on the other. Niether of these monitors show any banding in your image?
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thomland
Joined: 07 Apr 2008
Posts: 162
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Posted: Wed Feb 18, 2009 12:51 pm
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| jeffbanke wrote: | | dragonfang wrote: | | Are you sure the display setting on your computer is set to 32 bit and not 16 bit? I don't see any banding, on my 32 bit colored monitor, but if I lower it to 16 bit I do see it. |
I don't see any banding on either of my monitors, I run a CRT and an LCD specifically because I can see some things better on one kind, and other things on the other. Niether of these monitors show any banding in your image? |
If you bend down to the right of the screen maybe you can see it. It´s not so very visiable.
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Susan
Joined: 06 May 2005
Posts: 6283
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Posted: Thu Feb 19, 2009 4:38 pm
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| thomland wrote: | Here is a crop of the sky where the problem is. Don´t mind the noise.
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Visible banding can show up in an image in areas of color without shades of gray included in the said color. Saturated blue sky's are famous for showing banding.
Also If you pumped up the saturation in camera or in one of your programs so that you effectively blow the color channel in one area it will often show up as banding in contrast to the surrounding graduations.
Out of gamut colors in regard to your monitor or video card can also be at issue. If your monitor is not capable of showing the colors exactly this can exacerbate banding as your monitor shifts the out of gamut colors to colors it can display.
To remove the banding try adding a little noise to the banded and adjoining area using Filter/Add Noise and check monochromatic and then add a Gaussian Blur filter to blend it in.
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photostorm
Joined: 12 Mar 2008
Posts: 27
Location: Novi Sad, Serbia
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Posted: Thu Feb 19, 2009 6:43 pm
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Susan just said what I wanna to suggest. Noise will do the job.
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vesivus
Joined: 12 Sep 2007
Posts: 505
Location: Edmonton, Alberta, Canada
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Posted: Thu Feb 19, 2009 6:47 pm
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| Susan wrote: | | To remove the banding try adding a little noise to the banded and adjoining area using Filter/Add Noise and check monochromatic and then add a Gaussian Blur filter to blend it in. |
Wicked tip. Thank you susan. I'll try this. I've had issues with banding on my D80 for a while now, and I keep 'fuddling' with it until I get something that works.
As for this person's port, I LOVE this shot:
:)
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silverwebs
Joined: 16 Mar 2007
Posts: 167
Location: Seattle, Washington
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Posted: Thu Feb 19, 2009 8:11 pm
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| photostorm wrote: | | Susan just said what I wanna to suggest. Noise will do the job. |
Thirded. It's amazing what a little noise will do, counter-intuitive to us stock photographers though... isn't all noise supposed to be bad?
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jeffbanke
Joined: 18 Dec 2005
Posts: 17468
Location: www.xlr8photo.com, The real California
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Posted: Fri Feb 20, 2009 12:32 am
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OK,
I don't see it looking at the RGB signal, but in PS looking at the individual channels, R, G, B, I do see the banding, this is the easieat way to find out which channel is causing the problem. I n your case all three channels seem to have banding. I don't understand why your camera is displaying this problem, and in fact it may not be the camera, it may be your process. I have never had this problem with a D70s, a D100 nor the D300, so it leads me to belive that it is something that you are doing in your processing.
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daveallen
Joined: 04 Jun 2008
Posts: 111
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Posted: Fri Feb 20, 2009 8:54 am
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| jeffbanke wrote: | OK,
In your case all three channels seem to have banding. I don't understand why your camera is displaying this problem, and in fact it may not be the camera, it may be your process. I have never had this problem with a D70s, a D100 nor the D300, so it leads me to belive that it is something that you are doing in your processing. |
+1
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thomland
Joined: 07 Apr 2008
Posts: 162
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Posted: Fri Feb 20, 2009 12:30 pm
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| vesivus wrote: | | Susan wrote: | | To remove the banding try adding a little noise to the banded and adjoining area using Filter/Add Noise and check monochromatic and then add a Gaussian Blur filter to blend it in. |
Wicked tip. Thank you susan. I'll try this. I've had issues with banding on my D80 for a while now, and I keep 'fuddling' with it until I get something that works.
As for this person's port, I LOVE this shot:
:) |
Thank you! :)
I have bought a new camera. D700 so hope it will not be a future problem.
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thomland
Joined: 07 Apr 2008
Posts: 162
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Posted: Fri Feb 20, 2009 12:34 pm
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| Susan wrote: | | thomland wrote: | Here is a crop of the sky where the problem is. Don´t mind the noise.
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Visible banding can show up in an image in areas of color without shades of gray included in the said color. Saturated blue sky's are famous for showing banding.
Also If you pumped up the saturation in camera or in one of your programs so that you effectively blow the color channel in one area it will often show up as banding in contrast to the surrounding graduations.
Out of gamut colors in regard to your monitor or video card can also be at issue. If your monitor is not capable of showing the colors exactly this can exacerbate banding as your monitor shifts the out of gamut colors to colors it can display.
To remove the banding try adding a little noise to the banded and adjoining area using Filter/Add Noise and check monochromatic and then add a Gaussian Blur filter to blend it in. |
Thanks!
I will try this.
It was a RAW file and gently edited. It´s actually in the unedited RAW file as well. It must have been a problem with a bad kit lense and frontlight.
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