Forum: Photoshop


Subject: Photoshop weird color problems

KeremGogus opened this issue on Dec 30, 2007 · 5 posts


KeremGogus posted Sun, 30 December 2007 at 11:26 AM

Hello friends,

I have weird color issues on Photoshop. When I opened a regular terragen render on 8 bit bmp format and applied brightness contrast, auto colors and levels - saw that the colors are looking like "web colors". All colors passings are visible.  And Graident layer I applied on Photoshop looks like that too.

I attached a screen shot - I hope you can see it and give a helping hand to fix this.
Thanks in advance

link to screen shot


karosnikov posted Thu, 03 January 2008 at 12:51 AM

. **The effect you see is sometimes called banding,** I dont think it's a problem with the display. I think it's the interaction between the layers. When I make a gradient in PS I tend to put "Dither" on. it  scatters the colours a little more.. the example shows a red-green dither. the effect is almost impossible to detect when the colours are so similar, having a dither in your gradient would minimise banding.

I would also try to avoid having exactly the same (duplicate/clone) gradient effecting another try shifing the effect a pixel or two across, this might reduce funky colour intereaction.

See if you can add little noise to the gradient, or have a look also in the render options in the  3D program, a bit of difusion in the sky could work wonders.


KeremGogus posted Thu, 03 January 2008 at 5:39 AM

Thank you so much dear friend - this will help


thundering1 posted Thu, 03 January 2008 at 6:38 AM

"See if you can add little noise to the gradient, or have a look also in the render options in the  3D program, a bit of difusion in the sky could work wonders."

Yes, this is a common problem with large areas and a fine gradient - you often get banding of colors since it's changing only teeny amounts of shade or hue/value spread over a failry large area.

Along with adding some grain, then do a slight Gaussian Blur (just a pixel or two) and it will look like a better blend.

Hope this helps-
-Lew ;-)


KeremGogus posted Thu, 03 January 2008 at 8:44 AM

Sure guys - these tricks helped a lot. Thanks a million...