Question about gradients.

PJ
Posted By
Peter Jason
Nov 4, 2008
Views
512
Replies
5
Status
Closed
I have PSCS2

I want to form a gradient of one colour across a page and then one with a different colour in the opposite direction.

I need the colours to mix in the middle to give a blended colour.

For example if I have a plain blue-coloured gradient in the one direction, and over this I place one of yellow, then in the middle I should have a shade of green.

But this does not happen; instead I get the second colour swamping the first.

Is there any way to do what I want?
Please help, PJ
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D
dr
Nov 4, 2008
Peter Jason wrote:

I have PSCS2

I want to form a gradient of one colour across a page and then one with a different colour in the opposite direction.
I need the colours to mix in the middle to give a blended colour.

For example if I have a plain blue-coloured gradient in the one direction, and over this I place one of yellow, then in the middle I should have a shade of green.

But this does not happen; instead I get the second colour swamping the first.

Is there any way to do what I want?
Please help, PJ

Peter,

If you put the two gradients on different layers you could then select the blending mode. So put a blue, top to bottom, gradient on layer0, then yellow, bottom to top, gradient on layer1 and select the blending mode of layer1. I did a few quick tests and multiply seems to work quite well.

Duncan
JJ
John J
Nov 4, 2008
Peter Jason wrote:
I have PSCS2

I want to form a gradient of one colour across a page and then one with a different colour in the opposite direction.
I need the colours to mix in the middle to give a blended colour.

For example if I have a plain blue-coloured gradient in the one direction, and over this I place one of yellow, then in the middle I should have a shade of green.

But this does not happen; instead I get the second colour swamping the first.

Put each gradient on their own separate layer. Then select the top layer and fool around with the ‘mode’ (little box over the layers palette). I’d point you to the specific mode but by trying it yourself you will probably realize a little learning break-through. (On the WindoZe version of CS2 you can highlight the mode window and use up/down arrow to march through them.)
R
Ragnar
Nov 4, 2008
"Peter Jason" wrote in message
I have PSCS2

I want to form a gradient of one colour across a page and then one with a different colour in the opposite direction.

I need the colours to mix in the middle to give a blended colour.
For example if I have a plain blue-coloured gradient in the one direction, and over this I place one of yellow, then in the middle I should have a shade of green.

But this does not happen; instead I get the second colour swamping the first.

Is there any way to do what I want?
Please help, PJ

Your knowledge of colour theory is incorrect. Blue and yellow do not make green.
Put the yellow gradient in a separate layer as dr and John J have suggested and change the Opacity of the top layer. By altering the Blending Mode you will get different effects but a green transition will not be one of them.
R.
PJ
Peter Jason
Nov 4, 2008
"Ragnar" wrote in message
"Peter Jason" wrote in message
I have PSCS2

I want to form a gradient of one colour across a page and then one with a different colour in the opposite
direction.

I need the colours to mix in the middle to give a blended colour.

For example if I have a plain blue-coloured gradient in the one direction, and over this I place one of yellow, then in the middle I should have a shade of green.

But this does not happen; instead I get the second colour swamping the first.

Is there any way to do what I want?
Please help, PJ

Your knowledge of colour theory is incorrect. Blue and
yellow do not make green.
Put the yellow gradient in a separate layer as dr and John J have suggested and change the Opacity of the top layer. By altering the Blending Mode you will get different
effects but a green transition will not be one of them.
R.

Thanks for all the replies. I’ll try these.
P
MR
Mike Russell
Nov 5, 2008
On Tue, 4 Nov 2008 17:29:28 +1100, Peter Jason wrote:
….
I want to form a gradient of one colour across a page and then one with a different colour in the opposite direction.
….
In the world of Photoshop, colors don’t mix normally – for example red + green = yellow, and yellow + blue = yellowish gray. So you’ll need to break down exactly what you want your final image to look like, and build the mixtures yourself using the gradient editor.

Using your example of red and green crossed gradients, blue->white going from left to right, and yellow->white from top to bottom.

First map out some of the final colors – it may help to draw a rough version by hand. The upper left corner will be (blue + yellow) saturated green the bottom left corner will be pure blue. The upper right corner will be pure yellow, and the bottom right corner will be pure white. The diagonal from upper left to bottom right will fade from green to white in the lower right corner.

Taking this apart, from a hue standpoint, the hue will be blue in one corner, green in the middle, and yellow in the opposite corner. This is easily done in the gradient editor. Remember to click the New button *after* you edit and name your gradient.

Retain the background layer as pure white. Create a new layer, and draw the gradient across a diagonal. Create a layer mask, click on it, and fill it with a diagonally drawn gradient running from white to black.

This particular result may not be what you expected – blue and yellow are equally dominant, which is what you would get if the colors mixed equally everywhere. A real painting would probably look like this, because the second color would dominate, and overlay the first color. In cases like this, one gradient may not do the trick, and you may need to overlay several gradients on layers (with layer masks) to get the look you are after.
—
Mike Russell – http://www.curvemeister.com

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