Using magic wand on an already selected image part

[cadudesun]

Hi,

I would appreciate some help on handling it:

In my image there is an white sky background, where in front there is an person wearing white shirt.

I want to select a by color part of the sky. So I am using magic wand (match mode "color"). The problem is that it select the white shirt as well.

So, using freehand selection, I selected just the sky. Once I want just a color (not all sky), I am trying to to use magic wand (match mode "color" in mode "replace"). But once already exist a selection, the magic wand isn't available to "replace" (just in other modes - add or remove).

How could I make this selection without selecting the shirt? The intent of my first freehand selection was to protect the magic wand of selecting the shirt...

Thanks in advance,
Cadu

[ADonahoo]

The selection tool has 3 options: Replace, add, and remove. After making the first selection, change the tool option to remove and click on the object you want to deselect.

[df]

Hi,

I would appreciate some help on handling it:

In my image there is an white sky background, where in front there is an person wearing white shirt.

I want to select a by color part of the sky. So I am using magic wand (match mode "color"). The problem is that it select the white shirt as well.

So, using freehand selection, I selected just the sky. Once I want just a color (not all sky), I am trying to to use magic wand (match mode "color" in mode "replace"). But once already exist a selection, the magic wand isn't available to "replace" (just in other modes - add or remove).

How could I make this selection without selecting the shirt? The intent of my first freehand selection was to protect the magic wand of selecting the shirt...

Thanks in advance,
Cadu

The purpose of Replace isn't to actually replace the selection, but rather to start over with the selection. If you have a selection made and you use Replace mode then the previous selection will be discarded and the new selection will be used.

If you're so inclined, you can use the Magic Wand to select the sky, then use the Free Hand Selection in Remove mode to subtract from the selection. Edge Seeker or Smart Edge under Selection Type when Freehand is active may also be of use.

But before you do all that there's a few basics for the Magic Wand tool.
Lowering the Tolerance means it's less sensitive to the selection you're clicking on.
Checking Contiguous means the selection will only be made to the point of the one area you click on. It won't make a selection on one side of the image and also multiple selections all over the image.
Setting Feather to 0 is likely what you'll need for getting the sky butting up against that shirt. Otherwise the selection will fade in for as many pixels as the Feather is set too.
Match Mode can be hit or miss. Try also Traditional or Perceptual. I don't know the particular ins and outs of it all but they do produce different results.

Try this, set the Tolerance to 5, Mode to Add, Check Contiguous.
Click an area of the sky, then click another section of sky that didn't get included, then another, etc...
If the shirt gets included you can either back up, or switch to Freehand mode with Edge Seeker and Remove set. Click along the edge of the shirt, click click click, click on areas that are of low contrast to show the program where you want to be, click on areas where the line starts to turn a corner, double clicking will finish the selection process as will a right click, but a right click that hasn't anything as a start of a selection/unselection will unselect everything, so I don't use that method. Too easy to unselect all that hard work.

[cadudesun]

Thanks everybody for useful information.
Best,
Cadu