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Log C (Advanced Mode)
The Log C characteristic curve provides a signal
output according to Cineon format specifications.
Each stop of exposure is mapped in equal intervals
of digital code values. This characteristic is intended
for use in a DI workflow, as it delivers the same
tonal steps representation as the scans from a film
negative. Log C delivers an ISO equivalent/EI of 200.
When Log C is used, the EI cannot be adjusted in
the camera. The tonal balance of the signal has to be
adjusted using LUTs or through color correction.
Recommended Log C Setup
HD-SDI Mode: HD444 up to 30PsF
•
Output Range: Extended Range
•
Color Matrix: LOG
•
Note: When using Log C, the correct lens aperture
should be determined using an exposure
meter. On a waveform display, a correctly
exposed image is offset in the blacks
and does not reach the maximum signal
level due to the given specifications.
Note: To correctly preview the material on an
HD monitor or in a digital projection, a
log/lin conversion LUT (optionally also
adjusting for an EI) has to be applied.
0
1
Input
O
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clipping level
black level
18% grey
LOG C characteristic curve
