If you leave the settings for file numbering at their default: i.e. continuous numbering and not resetting with a new card, and do not manually reset the numbering, or low-level format your card, then the number in the file name in the form ###-#### should be the shutter count. That usually starts at 100-0001 and will go to 100-9999 then start at 101-0001 again (i.e. a counter reset every 10k).
cheers, TREVOR
The mark of good photographer is less what they hold in their hand, it's more what they hold in their head;
"All the variety, all the charm, all the beauty of life is made up of light and shadow", Leo Tolstoy;
"Skill in photography is acquired by practice and not by purchase" Percy W. Harris
