Color banding using ND filters sooc (Page 2): I am getting this straight out of camera...

karno Loc: Chico ,California

kymarto wrote:

Do you do very aggressive curve work? If you stretch a section of the curve a lot you can come up with this kind of banding, though I am surprised if you are getting that using 16 bit. If you are using PS, and opening in ACR, you have to make sure to open the raw directly in 16 bit. If it is converted to 8 bit first, it will remain effectively 8 bit even if you are working in 16 bit.

I am getting this straight out of camera

karno Loc: Chico ,California

I think it is opening in 16 bit I have all preferences in Lightroom set to 16
I get this upon importing into Lightroom with zero processing on the NEF file in many of my images, green and magenta artifacts.
I have hit a wall. I must figure this out my creative self esteem and mental stability is at stake.

kymarto Loc: Portland OR and Milan Italy

karno wrote:

I think it is opening in 16 bit I have all preferences in Lightroom set to 16
I get this upon importing into Lightroom with zero processing on the NEF file in many of my images, green and magenta artifacts.
I have hit a wall. I must figure this out my creative self esteem and mental stability is at stake.

Green and magenta artifacts are due to longitudinal chromatic aberration and depend on the lens. They are generally easy to fix. Go in the Develop module to "Lens Corrections" and enable "Manual". You will see two sliders that have color ranges--"Purple Hue" and "Green Hue". Set the ranges to match the color of your fringing and then adust with the "Amount" sliders. This should remove the fringing if you set it correctly.

karno Loc: Chico ,California

kymarto wrote:

Green and magenta artifacts are due to longitudinal chromatic aberration and depend on the lens. They are generally easy to fix. Go in the Develop module to "Lens Corrections" and enable "Manual". You will see two sliders that have color ranges--"Purple Hue" and "Green Hue". Set the ranges to match the color of your fringing and then adust with the "Amount" sliders. This should remove the fringing if you set it correctly.

I think it is more then fringing I may have used wrong term

User ID

`

Long exposure color noise ?

You could break up your long
exposures as multiple shorter
exposures using the multiple
exposure feature.

I believe thaz what the ME is
for. In-camera ME for special
effects was a film era game.
With digital PP, in-camera ME
is pretty much obsolete for
the special effects artistes.
But it lives on to avoid long
continuous single exposures.

.

tcthome Loc: NJ

Just out of curiousity, what lens? Slide in filters, thread on gnd?

catchlight.. Loc: Wisconsin USA- Halden Norway

Fotoartist wrote:

Fixing banding issues is tough but I'm going to go out on a limb and say it is impossible to create banding with a 16-bit file. So use 16-bit.

camerapapi Loc: Miami, Fl.

We all know banding could be an issue using JPEG files but it should not be using RAW. Aggressive editing could produce it but that I know you are aware of.
Perhaps you should send some of those images to Nikon and see what they think about it.

treadwl Loc: South Florida

After reading your post, I'm wondering if your problem is the same as mine.
I've attached a photo which shows what I think is banding.
I used a 10 stop B & W ND filter attached to a Nikon D810 camera with 24-70mm lens. There is a magenta "band" running left to right just above the wavelike red line I drew and highlighted with the arrow. The line was a much brighter magenta but I worked it down in post. I find it still annoying. It does not occur with my 6 stop filter only the 10 stop. It appears in the same place (lower third) even if I change the position of the filter (rotate it 90 degrees) I can't sell the photos with the band but can't figure out how to remove it. I'm open to suggestions.

The magenta line runs all the way across the photo---if you look you can see it in the rocks as well.

(Download)

Blair Shaw Jr Loc: Dunnellon,Florida

OH WOW....there it is ! Thanks for sharing this crazy problem and I'll follow the progress to solution you & the Hogs come up with. Another Learning session for we beginners...thanks again guys.

JIMBO

RichardSM Loc: Back in Texas

This is interesting, I also will stay tuned!

treadwl wrote:

After reading your post, I'm wondering if your pro... (show quote)

Fotoartist Loc: Detroit, Michigan

karno wrote:

I attached a snap of a test print I got back fro bay photo it is easy to see in the sky.

Banding is only possible to detect by the human eye in smooth areas such as a sky. Your photo with the smooth sky is an example of it. Also called posterization.

lev29 Loc: Born and living in MA.

karno wrote:

Over the years I have had issues with colorbanding in my images when I use ND filters ...
This problem has plagued me over the years and ... has been happening often.
I have had this issue shooting ... with ... heliopan Nd filters ... Now having the issue while shooting ... with breakthrough Nd filters ...
I use Nd filters for most of my work especially the 3 stop to give water a bit of movement. But use 3,6.10 and 15 stop filters ...

Karno, having just reviewed the entire thread to date of responses to your question, I have a short related series of questions for you that might prove useful:

Has this intermittent color-banding problem occurred with each and every Heliopan and Breakthrough ND filter you have acquired, regardless of the #stops it is?

Has it occurred with any other brands of ND filters you may have tried out? Just to confirm, none of these filters is of the variable ND variety, right?

Thank you

lamiaceae Loc: San Luis Obispo County, CA

karno wrote:

Over the years I have had issues with colorbanding... (show quote)

I'm not really fond of ND or CPL filters. So I avoid all that. I sometimes shoot my prime lenses naked. 14-bit Raw to 16-bit ACR (PSD and TIFF files).

Ken Owen Loc: mid-Michigan

Have you tried shooting without filters to see if the color banding is still a problem?