Originally Posted by
Glenn NK
Good work Louise.
I have a black backdrop (dull black cloth) that I haven't used since I discovered the adjustment brush in LR - I frequently use the AB to modify the BG. What I found with the black cloth is that it seldom is pure black because it's hard to keep clean and even dull black will show some reflections. Also, it prevents other options.
I've resorted to using the AB in LR; the advantage is that I can soften the BG without making it black, and get some options other than black.
Using the brush with masking on, and no feather (density and flow at 100), I carefully go round the edges of the image I want to keep sharp. Then to save time, turn the masking off, and paint the remainder of the frame. In area where the edge isn't really sharp, some Feather is useful.
For a black BG, sometimes a duplicate brush is required to get everything totally black.
For a softened BG (defocused) set Contrast, Highlight, Clarity to -100, Shadow to +100. Don't set Sharpness below -35 or so or nasty things will happen with the Gaussian sharpening (so I've been told).
Quite a few of the flower pics linked to below use the AB to defocus/soften the BG (Spanish Lavender, Lavender, and Iris come to mind).
Glenn