Store snapshots of the center image and compare them against the current edit.
A snapshot is a frozen bitmap of the darkroom center view, taken at any point during editing and later overlaid onto the current view for a side-by-side comparison while you tune a module. It can also be combined with the history of changes to compare a snapshot against different stages of development.
Taking and comparing snapshots
Click take snapshot to capture the current center view. Each snapshot is listed above the button; its name reflects the module selected in the history and its position at the time it was taken.
Click a snapshot’s name to display it: this splits the view between the saved snapshot and the current image. Drag the split line to move it. Hover the split line to reveal a small rotation icon at its center; click it to rotate the split orientation (the snapshot and current image cycle between top/bottom/left/right). An arrow marked S always indicates which side is the snapshot.
Click the snapshot name again to hide the overlay and return to editing. Use the module’s reset button to clear all snapshots.
Note
Snapshots are kept for the duration of your Ansel session, so you can also use them to compare against a duplicate edit of the same image: take a snapshot, switch to the other version, and enable the snapshot overlay as usual.