It's easy with single file:

exiftool -tagsfromfile apple.jpg -exif:all apple.jpg.mie

Now, what I'm trying to do (for last two hours, grrr), is something like this:

exiftool -tagsfromfile apple.jpg boat.jpg tree.cr2 -exif:all %f.mie
-to get:
apple.jpg.mie
boat.jpg.mie
tree.cr2.mie

Don't need to tell you, that above exiftool line doesn't do the job (and I've tried many other combinations). And it seems so trivial... I'm on Windows (if that matter).
An the solution is?

Greetings,
Bogdan