How many code values are there per stop in ALEXAs Log C signal?
When the ALEXA Log C signal is recorded as 10 bit video, you will have approximately 80 code values in each stop above 18% grey. The original Cineon log encoding is based on the density of color negative having a gamma of 0.6. This results in 90 code values per stop. The large dynamic range of the ALEXA camera makes it necessary to use a lower gamma value. Modern color negatives, having more latitude than negatives 15 years ago, also have a gamma lower than 0.6.
