The most common and most likely answer to this crossword clue is the 15 letter word CINEMATOGRAPHER
C
I
N
E
M
A
T
O
G
R
A
P
H
E
R
Buddy explains!

The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does CINEMATOGRAPHER mean?
CINEMATOGRAPHER noun- A photographer who operates a movie camera, or who oversees the operations of the cameras and lighting when making a film.
- One who exhibits motion pictures; a projectionist.