Artist's following arrived, one holding pictures (6)
I believe the answer is:
camera
'one holding pictures' is the definition.
(a camera takes pictures or photographs)
'artist's following arrived' is the wordplay.
'artist' becomes 'RA' (Royal Academician, member of Royal Academy of Arts).
'following' is a charade indicator (letters next to each other).
'arrived' becomes 'came' ('come' can be a synonym of 'arrive').
'ra' after 'came' is 'CAMERA'.
(Other definitions for camera that I've seen before include "Still producer" , "Image recorder" , "Device for taking photos" , "In - means in private" , "Device for recording images" .)