If I have a selection in Photoshop which selects two distinct areas how can I modify the selection to remove the one area I don't want selected? For example, I use Select Subject and it selects a flower and a stray separate leaf. The selection is quite correct, they are both in focus so arguably the subject. I want though to remove the leaf from the selection. How do I do this without deselecting the flower as well?
Thanks for reaching out. That is a great question. Let me see if I can clarify that for you.
There are more than a few ways or approaches you can take to achieve the results you are expecting.
There are a variety of Selection tools in Photoshop, and apart from just using tools like
Rectangular Marquee Tool.
Elliptical Marquee Tool.
Polygonal Selection Tool.
Magnetic Lasso Tool.
Magic Wand Tool.
Quick Selection Tool.
And there is a variety of techniques too like using Channels, Paths, the Pen tool & a lot more.
Most selection tools have options in the tools bar menu to add to selection, subtract from selection & intersect with selection.
You are using Select Subject, which evaluates the elements of the image and gives you are a selection. You can use any of the tools mentioned above or just the Lasso tool & press ALT (Win) or Opt (macOS) to change the mode to subtract from the selection.
I'm not 100% sure but when I have unwanted areas selected I can select and mask off the areas I didn't or did want included. There is a quick mask option which is alt q for windows where you can remove unwanted area's to be selected.