NOTE that this is long-pressed on the tablet to do a zoom to width of page.

This is the softer sharpening shown in the first of two shots.
The next one (see 'next' at top or bottom right) is of a stronger sharpening
at a setting of '150' rather than '25'...

This was in connection with the review and my comment about the current Kindle Edition images,
at the book's Customer Reviews pages.

The screenshot was a png file and I saved it via Irfanview as a jpg, at 95%.