This tutorial explains in a clear and understandable how the radius work.
Find the text transcript here
This tutorial explains in a clear and understandable way what local contrast is.
Find the text trasncript here
NEXT Local Contrast Enhancer. The Next Generation ALCE.
ALCE has been our bestselling product for many years and, since the release of ALCE2, its core functionality has not changed significantly. Recently, thanks to the know-how achieved developing plugins as Wow! and Mask Equalizer, we set out to make this outstanding product even better by improving on some of ALCE’s weaknesses. Specifically, we focused on: creating a live preview, improving the embedded halos suppress tool, adding three masking sliders and last, switching to Quad-Core processing and 32bit computing capabilities, not available in Photoshop.
The result was the Next Generation Local Contrast Enhancer, which we decided to rename NEXT.