How about you, do you know what your job description as a cinematographer is?
Here is a list of typical duties required of today’s cinematographer. Some of them you may already be familiar with and others you may not, definilty a good read. Here is a sample:

# Visit laboratory to calibrate, customise and evaluate exposure system for any combination of electronic or chemical image capture; and establish developing, printing, set timing and transfer protocols
# Visit rental houses
# Explore new equipment
# Learn how new equipment works
# Invent (or cause to be invented) special equipment or techniques for show
# Standardise and create effects bible for show
# Help create and approve any story boards
# Design (or cause to be designed) and approve any built-in or practical lighting fixture
# Design lighting-plot plan and rigging for stages and locations with gaffer and key grip D. Quality Control