Sony PXW-FS7 Quick Reference Manual page 10

C. Choosing the right operating mode
To help with exposure and to help gauge what the
material will look like after grading the camera can apply
a Monitor Look Up Table (MLUT or LUT) to the viewfinder
or monitor outputs. The MLUT converts the image from
the flat looking S-Log2/3 range to a conventional viewing
range. Different MLUT's can be used to give different
monitoring ranges and different looks. You can even load
user created MLUT's in to the camera. The MLUT isn't
normally recorded. It is just added to the viewfinder or
monitor output as a tool to help estimate what the final
pictures will look like.
In order to maximize the cameras dynamic range in Cine
EI the recording ISO of the camera is locked to it's native
ISO of 2000. To help cope with difficult or challenging
lighting situations the camera can be "rated" at a higher or
lower equivalent ISO by changing the cameras Exposure
Index or EI. This changes the brightness of the MLUT or
LUT rather than the actual recording ISO. For a detailed
explanation of this please see the Using Cine EI chapter.
In the Cine EI mode the auto exposure functions such as
auto iris, auto shutter speed and automatic gain (AGC) are
disabled, so exposure must be set and adjusted manually.
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