There is no such capability. I'm not sure I understand why smaller images wouldn't be enlarged to fit the frame. That would enable you to specify reduce or enlarge as your data format.
To do what you want, you'd need to set up two copies of this container field with the specified data formats. Then, either select the appropriate layout on a record by record basis or you can place each copy on a separate panel of a tab control and use a script to select the correct tab panel instead of selecting a different layout.
Thanks PhilModJunk. I will try that.