melcat wrote:
In Finder, click once to select the file name. Then wait long enough for it not to be seen as a doube-click, and click again; this will select the part of the file name before the dot. Now, as with any other selection on macOS, press right-arrow to place the insertion point at the end of the selection and cancel the selection. This leaves the insertion point before the dot.
As I already posted above, it is easier and faster to do that with hundreds of files at the same time, instead of one at a time.
It’s even easier in Capture One. Click on the file name under the thumbnail, which will hide the dot and extension and select what’s left of the file name. Now press right arrow to turn the selection into an insertion poiint at the end and make your edit. Press return to accept or ESC to discard the edit, and the hidden dot and file name will reappear.
I don't use Capture One, and thanks, but others already showed me the more efficient way.