How does ps deal with blurred images clearly?

Phenomenon: the photo is blurred. Due to inaccurate focus and unstable camera, the photo is blurred. Blurred photos can be sharpened and clarified in the following two ways.

1, channel sharpening

Processing method: open the picture-enter the channel [find the channel with the most information] copy-filter-stylize-illuminate the edge [edge width 1, edge brightness 20, smoothness1]-OK; Filter-Blur-Gaussian Blur [radius is 0.5]-OK; Color scale [sharpening area is more accurate, edge contour is prominent]-OK; Convert outline to selection [Load channel as selection]; Go to the Layers Panel-Duplicate Layers-Filters-Artistic Effects-Paint Smudge [The smaller the brush, the clearer it is, the sharpening degree12]-OK-Cancel the selection-Duplicate the background-Change the blending mode to "Positive Overlay"-Modify the opacity-OK.

2, intelligent sharpening

Processing method: Open photo-filter -USN sharpening [automatically generate contrast, the number is 50, the larger the radius, the wider the affected edge 10, and the lower the threshold, the stronger the sharpening effect]-OK; Filter-Sharpen-Intelligent Sharpen [Click the "Advanced" item to sharpen, with a value of 60 and a radius of 2.5 to remove Gaussian blur; You can also adjust the sharpening of darker and brighter areas by "Shadow, Highlight", and the parameters remain the default ]-OK.