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Author Topic: Some banding problem?  (Read 2451 times)

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vonkara

« on: February 01, 2008, 11:58 »
0
If somebody could help me whit what it seem to be some banding. I know that you probably could not zoom in, but I can see this using the thumbs: (Look at the light on the orange background)

http://www.shutterstock.com/pic-8978089-open-book-on-a-dynamic-orange-background.html

I have photoshop 6.0 (a dinosaur I know) Pictures taken in Jpeg and the problem seem to be that my photoshop work in 8 bits.

I try to put it in 16 bits but then the tools don't work anymore...

Do I need a better phtoshop version or to work in RAW to achieve more bits?
« Last Edit: February 01, 2008, 12:00 by Vonkara »


PaulieWalnuts

  • On the Wrong Side of the Business
« Reply #1 on: February 01, 2008, 12:51 »
0
To reduce the banding switch to using AbobeRGB, shoot RAW/NEF, and convert it in Photoshop with Adobe Camera Raw. That should preserve more of the color space. As far as I know the .jpg file format is only 8-bit so you really don't have a choice.

Is this from your D300?

« Reply #2 on: February 01, 2008, 13:07 »
0

I had the same problem. I just worked on one image where I made an artificial sky, where exactly this happens. What I did was selecting the area with the problem applying slightly noise through a photoshop filter and then useing motionblur 90 of the direction of the banding. After that I applied again noise but this time just minimal as it is normal when taking an image of a sky. So it does not get rejected at iS for overfiltering. It worked in my Elements 2.0. the last time. Hope that helps.

Noise helps to prevent banding. If you used noise reduction, maybe that was the cause of the banding. Usualy directly out of my camera I never have problems with banding,  just when I do extensive work with photoshop. But I am not an expert.
« Last Edit: February 01, 2008, 13:14 by Freezingpictures »

vonkara

« Reply #3 on: February 01, 2008, 13:26 »
0
Nazdravie

Yes that picture was taken whit the D300, but the background is totally a photoshop work using the paint bocket and gardient tool. The picture was taken in adobe RGB but my phtoshop don't have this mode...only the RGB, who is one of my problem whit this version.

Freezingpictures

You are totally right about we have the same problem. I also try the motion blur but whit less care than what you did. I will retry that



« Last Edit: February 01, 2008, 13:56 by Vonkara »

PaulieWalnuts

  • On the Wrong Side of the Business
« Reply #4 on: February 01, 2008, 14:12 »
0
I ran into this when I created an artificial sky. I ended up just reducing the variance between the two gradiant colors and that worked.

vonkara

« Reply #5 on: February 01, 2008, 15:22 »
0
It's a bit funny, whitout seeing your post, I just try to reduce the two gradient and yes it work. But it's doesn't give the original impact I was firstly try to achieve.

I also try again the motion blur, whit an angle of 42 for the upper banding who also work well. But there still some artifacts who afraid me a little. I just try to have a correct background

Now I think my problem is mostly a technical one. First I must try to buy photoshop CS2 or 3 for at least having the adobe RGB color space available. Another thousand queen heads away :-\

Then if it's don't work again, shoot in RAW at 12 or even 14 bits.

But do CS2 have this 12 and 14 bits option. The 6.0 have just the 8 and 16 bits?


 

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