Gradient banding Photoshop CS.

AG
Posted By
Alastair Grant
Mar 2, 2005
Views
328
Replies
3
Status
Closed
I’ve just sprouted a very annoying problem with Photoshop CS (running on Windows 2000).

When I use the gradient tool I get banding. Simple enough, but the problem exists exclusively in Photoshop. I’m running in 32-bit colour (GeForce gfx card). When I switch to ImageReady there is no banding. When I save to web and get the previews, it’s fine (including the original).

It is only the workspace of Photoshop which has this banding.

I have tried altering my colour profile, and even disabling them – but this doesn’t improve anything (although some profiles make it worse). I have tried deleting my settings file to see if it was an odd side effect of something, but no.

I’m really stuck on this one. I could happily blame something else if it happened on everything, but as it’s only on files open in Photoshop it’s got me very confused.

A saved file (which appears fine in the save preview, or any other application) will look wrong in Photoshop once reopened.

Does anybody have any suggestions to solve this?

Thanks,

Alastair.


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AG
Alastair Grant
Mar 2, 2005
I have no idea if this will be visible on other people’s machines, but if it is you will see that the right hand image is fine, and the left is banded (although both the same file):

http://www.aligrant.com/tmp/gradient.png

Alastair Grant wrote:
I’ve just sprouted a very annoying problem with Photoshop CS (running on Windows 2000).

When I use the gradient tool I get banding. Simple enough, but the problem exists exclusively in Photoshop. I’m running in 32-bit colour (GeForce gfx card). When I switch to ImageReady there is no banding. When I save to web and get the previews, it’s fine (including the original).

It is only the workspace of Photoshop which has this banding.
I have tried altering my colour profile, and even disabling them – but this doesn’t improve anything (although some profiles make it worse). I have tried deleting my settings file to see if it was an odd side effect of something, but no.

I’m really stuck on this one. I could happily blame something else if it happened on everything, but as it’s only on files open in Photoshop it’s got me very confused.

A saved file (which appears fine in the save preview, or any other application) will look wrong in Photoshop once reopened.
Does anybody have any suggestions to solve this?

Thanks,

Alastair.


http://www.wireplay.co.uk/
http://www.aligrant.com/

"Never be ashamed of not knowing a
thing, but always be ashamed of not
wanting to know."
N
natex
Mar 2, 2005
Alastair Grant wrote in
news:4226231d$0$2771$:

I’ve just sprouted a very annoying problem with Photoshop CS (running on Windows 2000).

When I use the gradient tool I get banding. Simple enough, but the problem exists exclusively in Photoshop. I’m running in 32-bit colour (GeForce gfx card). When I switch to ImageReady there is no banding. When I save to web and get the previews, it’s fine (including the original).

It is only the workspace of Photoshop which has this banding.
I have tried altering my colour profile, and even disabling them – but this doesn’t improve anything (although some profiles make it worse). I have tried deleting my settings file to see if it was an odd side effect of something, but no.

I’m really stuck on this one. I could happily blame something else if it happened on everything, but as it’s only on files open in Photoshop it’s got me very confused.

A saved file (which appears fine in the save preview, or any other application) will look wrong in Photoshop once reopened.
Does anybody have any suggestions to solve this?

Hi Alastair,

Is Photoshop using Proof Colors? ( under "View" in the menu). I can recreate your banding by creating a new RGB file, painting a gradient, then changing the Proof Setup to CMYK and pressing CTRL+Y to use this setting.

nate
AG
Alastair Grant
Mar 2, 2005
This isn’t enabled, although I’ve just tried several combinations and it does make a difference to the style of banding – but does not disable it.

Thanks,

natex wrote:
Hi Alastair,

Is Photoshop using Proof Colors? ( under "View" in the menu). I can recreate your banding by creating a new RGB file, painting a gradient, then changing the Proof Setup to CMYK and pressing CTRL+Y to use this setting.

nate

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