[CWuestefeld]

That only works if you're shooting RAW. And even then all you've accomplished was a convoluted process to achieve the exact same thing you'd get in Lightroom by adjusting the Blacks and Whites sliders, and dragging the ranges horizontally in the histogram.

[sigi45]

That does not invalidate my original statement.

I would argue that the end result should look slightly different.

But you do use more of your dynamic range