If you have an existing customer base, you might want to make sure whatever name you choose is recognizable to them as "you." You don't want them to assume you went out of business or something, and go find a different photography studio.
It's kind of a long thing to write, but you could include do it like this, as a transitional thing:
"APPLE BLOSSOM IMAGES: a Diane Deiderich photography studio."
After a year or two you could drop the part that says "a Diane Diderich photography studio," once you're sure that your original customers now associate "APPLE BLOSSOM IMAGES" with your work.
Good luck... that's pretty exciting, to be expanding like this!!