For contrast masking in PS, check here.
Duplicate layer.
Desaturate: Colors>colorize>Hue, 0; Saturation, 0
Invert: Colors>Negative image
Gaussian blur: Effects>Blur>Gaussian (r>5)
Set blend mode to overlay
Reduce opacity of layer if necessary
Changing the blend mode to overlay before blurring allows you to see the effect of changing the radius.
Duplicate layer.
Desaturate: Colors>colorize>Hue, 0; Saturation, 0
Invert: Colors>Negative image
Gaussian blur: Effects>Blur>Gaussian (r>5)
Set blend mode to overlay
Reduce opacity of layer if necessary
Changing the blend mode to overlay before blurring allows you to see the effect of changing the radius.
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