Set Filename to title on multiple images

Dear Jacques,

check the first screenshot.

In your case:

1. Select all pictures where you want to add or change meta data.
2. 
3. Of course, "Field to fill" has to be "Title".
4. "Fill with" can be any text (as you mentioned), but it can as well process tokens, i.e. placeholders to retrieve other meta data from each individual image meta data. In the screenshot I use the {FILENAME} token, which writes the respective file name with extension into the title fields of every selected image. Next to it on the right, you can see I saved this as a preset called "Fill Title with Filename and Suffix"
5. There are tokens basically for every kind of meta data. To get an overview of all available meta data tokens, click on the button "Token examples" right next to the preset dropdown – second screenshot.
   The examples as well show what data would be pulled from, which is very handy.
6. 
7. Back in the main dialog, you may choose to blindly overwrite the field, or to do so only if empty.
8. Lastly, check again if the example given below the "Fill with" field is exactly what you want to have. (Even so in most cases you could correct it with another "Write Data Field" process afterwards, if wrong.)
9. and click ok.

Hope that helps,

Ronen