View Full Version : 16-bit gradient "BANDS"

02 February 2005, 06:20 PM
When I'm saving a gradient in Photoshop at 16-bit, it bands, is there any way to avoid that?

02 February 2005, 06:39 PM
bands where? on the screen or in print?


02 February 2005, 06:41 PM
On screen, it's part of graphics for a game; (and that specific application supports only 16-bit)

02 February 2005, 07:41 PM
k, are you seeing the banding in photoshop or this other program?


02 February 2005, 07:57 PM
Both in photoshop and on the game screen

02 February 2005, 12:16 AM
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, 07:01 PM
Well, I've certainly been called a lot - but bewildered is a new one... =o)


02 February 2005, 08:02 PM
apologies , i thought there were more people replying...the thread seemed a tad confused on a skip read....oops.

03 March 2005, 02:00 PM
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 :D

03 March 2005, 02:13 PM
try adding a very light noise, possibly in a new layer in overlay-mode

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