16-bit gradient "BANDS"

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  02 February 2005
Question 16-bit gradient "BANDS"

When I'm saving a gradient in Photoshop at 16-bit, it bands, is there any way to avoid that?
Thanks,
-L.B.
 
  02 February 2005
bands where? on the screen or in print?

n8
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  02 February 2005
On screen, it's part of graphics for a game; (and that specific application supports only 16-bit)
 
  02 February 2005
k, are you seeing the banding in photoshop or this other program?

n8
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  02 February 2005
Both in photoshop and on the game screen
 
  02 February 2005
assuming your talking 16bit (32000 colours) for the whole file rather than 16 bit per channel (over 1 billion colours) (which i assume is what everyone else is thinking...hence the bewildered replies)

banding is part of that because your using a reduced colour palette...try adding noise which will help...blur certainly wont.

or use a method that introduces dither into your gradient (this can be switched on in PS)
 
  02 February 2005
Well, I've certainly been called a lot - but bewildered is a new one... =o)

n8
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  02 February 2005
apologies , i thought there were more people replying...the thread seemed a tad confused on a skip read....oops.
 
  03 March 2005
Got Paint Shop Pro?

I am making a game for the Gizmondo, and that has a 16 bit screen. I had the same issue. Needed to have the background with a nice smooth blue to white gradient. To get around it, I went into Paint Shop Pro, dropped the image to 65000 colors (the equiv of 16 bit... 32000 is 15bit I am sure). Then after it had dropped to 65000, I then dropped to 256 using Optimised Octree mode. Then I imported to to the game and it looked absolutely perfect.

Simple
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  03 March 2005
try adding a very light noise, possibly in a new layer in overlay-mode

Last edited by cthunig : 03 March 2005 at 06:55 PM.
 
  03 March 2006
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