MORE THAN 9999 PHOTOS TO TRANSFER

WHAT IS THE MAXIMUM NUMBER OF PHOTOS THAT CAN BE TRANSFERRED IN ONE GO?


HI I HAVE 17000 PHOTOS ON MY IPHONE 6S THAT I WANT TO TRANSFER TO MY MACBOOK LAPTOP HOWEVER WHEN I TRANSFERRED AND CHECKED BEFORE DELETING THE PHOTOS ON THE PHONE THERE ARE ONLY 9999 PHOTOS ON MY LAPTOP AND THEY SEEM TO BE RANDOMLY CHOSEN RATHER.  IS THER A LIMIT OF 9999 PHOTOS AS IT SEEMS THE PHOTOS ARE LABELLED 0001 TO 9999 SO I'M GUESSING THATS THE LIMIT. 

ANNE-MARIE