Photoshop tonal blend question

[magic torch]

I want to blend the edge of an image to a consistent tone, say 50%.

ie the 90% area will decrease to 50%, but 20% area will increase to 50%. I'd also like to specify the exact distance this occurs over.

Have tried using a layer mask, but doesn't seem to work.

Does anyone know how to achieve this, thanks.

[S. Gonzales Esq.]

You might want to have a go at explaining that again. Are you trying to feather the edges to 50% grey?

[trackdemon]

Sounds like your after a gradient, right? Is so I have super quick and easy method for that......

[magic torch]

Say I've got a CMYK image, I want a border that is 60% CMYK.

Then say the edge of this image has a tonal range of say 5% to 90%. I want the 5% to increase to 60% over say 0.3mm, the 90% to decrease to 60%, and so on.

Most filters seem to either lighten or darken.

Effectively the edge of the image will blur to a continuous tonal value, 60%.

Is that any clearer? It'd be easier to explain graphically, but that's what I'm trying to do

[trackdemon]

Yeah, sounds like a gradient. Gradient tool only works in one direction but you could create multiple layers for each side of the image... I dare say it'd be possible to create an action to do the job. Post on image up and I'll see if I can do something later this evening - bit busy now

[VxDuncan]

Completely confused as to what you're trying to achieve, but say you had a block of 90% cyan and wanted to fade to 50% over 15pixels. You'd make a layer underneath the image that's 50% cyan. With the image on top create a selection round it, feather to 15px, then invert and delete (dirty) to get rid of the edge, or create a layer mask from selection (less dirty!). Is that what you meant? or have I missed something?

[Simpo Two]

magic torch said:

Then say the edge of this image has a tonal range of say 5% to 90%. I want the 5% to increase to 60% over say 0.3mm, the 90% to decrease to 60%, and so on.

Is the answer - a 60% grey border?

[VxDuncan]

Simpo Two said:

magic torch said:

Then say the edge of this image has a tonal range of say 5% to 90%. I want the 5% to increase to 60% over say 0.3mm, the 90% to decrease to 60%, and so on.

Is the answer - a 60% grey border?

Reading back I think that's what he's after!

[S. Gonzales Esq.]

In that case, create a new layer and fill it with whatever you need for the edges.

Next, 'remove' the centre to reveal the original image beneath.

1 - quick & dirty: marquee, feather the edge, delete it.

2 - better: add layer mask to new layer. Fill with black, then add white gradients at the edges to reveal image beneath. Remember to select the gradient that goes from foreground to transparent.

[Zad]

How about converting to CMYK and blurring the K (luminance) layer over a selected border area?

[magic torch]

As an example, what I'm looking to do is fill the white gap with a blend from left to right.

So, the darker tonal areas decrease in value, the lighter values increase. Does this make sense?

[Zad]

Sample the pixels (mark and copy) from the final row of the image. Paste it and stretch it to fill the gap. Then, on another layer, do a gradient fill (from border colour to transparent) directly over it.

[S. Gonzales Esq.]

Like this?



Or, subtly different:

[magic torch]

Great, thanks both of you.

Mike, I'll try your method tomorrow on the images.

Tony, can I ask how you achieved that? First one looks like what I'm after.

Thanks again

[trackdemon]

I got much the same thing...



Cloned the solid colour block to a new layer, added layer mask then used gradient tool....

[magic torch]

Looks good, has the subtly I'm looking for, I'll give that a go too.

Unfortunately I can't post the actual image on here. It has a tonal range of 4% - 80% along the edge and I've only got 0.3mm to make the gradient. The more options I have the better.

Really appreciate everyone's input.

[S. Gonzales Esq.]

magic torch said:

Tony, can I ask how you achieved that?

Pretty much as I described above - new layer, filled with colour. Add a layer mask & gradients to do the feathered edge. The other version was done with the brush tool rather than gradients for a less even effect.