Filter syntax question

[Al Bogner]

It is probably very simple, but I can't get it work.

Example:

/dir/dir1/a.jpg
/dir/dir1/a.tif
/dir/dir1/a.txt

/dir/dir2/b.jpg
/dir/dir2/b.tif
/dir/dir2/b.txt

/dir/dir3/x/c.jpg
/dir/dir3/x/c.txt

a.s.o.(a few thousands dirs)


rsync should only sync the jpg and tif-files, but not the txt-files. 
Actually it are more extensions. The target-dir should contain the subdirs
too, if an extension exists, which should be synced.

So the result should be in the target-dir, when synced:

/dirsynced/dir1/a.jpg
/dirsynced/dir1/a.tif

/dirsynced/dir2/b.jpg
/dirsynced/dir2/b.tif

/dirsynced/dir3/x/c.jpg


I use the options rlptgoDvz.

Thanks

Al