darktable-org/darktable — pull request #390 by jkossen (2013-12-05 17:05:33+00:00)
Title: Lighttable: Map preview under z, preview with focus detection under ctrl-z (Redmine feature request #9709)

Instead of having a configuration option, put the "normal" preview under the z key and preview with focus detection under ctrl-z.

Not sure if it should be ctrl-z or shift-z, since ctrl-z also reminds me of an undo action.