Additional information and functions outside the right panel
There are two additional buttons on the bottom of our right panel in Develop module – Previous and Reset.
Figure 6.84 – The Previous and Reset buttons
The Previous button copies all of the settings from the last photograph and applies them to the currently viewed one. The only settings that aren't copied are the AI masks: Select Sky and Select Subject. We can also use the "Alt + Cmd + V" keyboard shortcut.
Clicking Reset will bring the photograph to its original state. We can also use the "Shift + Cmd + R" keyboard shortcut.
If more than one photograph is selected, Lightroom will replace the Previous button with the Sync... button. Sync... will copy all the settings we have from the highlighted photograph to all the other selected photos. Once we click on Sync..., we can choose which settings we would like to synchronize between the selected photographs...