When you select your background, save it as a selection. Then inverse your selection and save the foreground.
Load the background selection as a separate layer and apply your blur.
Then load the foreground selection as a separate layer on top. This should eliminate any "leakage."
Then merge your layers.
To achieve a more natural look, you can go over the outlines of your foreground image with the blur tool at a magnified view. That will make the edge of the focused area less obvious.
See if that works for you!
Beth
Www.BethMadisonPhotography.com
--- In Adobe_Photoshop_Techniques@yahoogroups.com, "slcphoto73" <slchapin41@...> wrote:
>
> Say I have an image with a sharp foreground object and I want to blur the background. I start with a selection of the background and blur it using Gaussian Blur.
>
> The problem is that the blur incorporates colors/luminance from the masked areas. There is even luminance leakage when the masked area is empty. The result is a halo around the foreground object.
>
> My question - how do I avoid the leakage halo?
>
> Thanks, susan
>
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