Blur Backgrounds

  1. Selection Brush :  (environmental portrait) big brush, set mode to mask
    1. Paint subject
    2. Click Zoom to get out of mask mode and see marching ants
    3. Filter > Blur > Gaussian Blur
    4. De-select to see your image better
    5. The blurry background may now not look very realistic because it includes foreground subject matter that wouldn't actually be blurry
    6. Undo twice to get to the point before you blurred the first time
    7. Click back to the selection brush to see your mask again
    8. Change your selection brush to soft 300 brush
    9. Paint only the bottom of your image with mask
    10. Re apply the gaussian blur with Ctrl-F
    11. De-select to see the effect