Do you need to write a press release? It seems making pictures available to go with your news item may (may) increase the chances of your story being run.
However, most news folks aren’t all that interested in opening large files from strangers. What do you do?
You post the pics somewhere online…
Then you include links to those pics…

Author Erin McCole Cupp distributing slices of Philadelphia-style tomato pie at the 2013 Catholic Marketing Network Trade Show (c) James Hrkach 2013
… in the emails you send to the various media outlets.
Comme ça!
My work here is done.