Jamie LeJeune wrote:How digital cinema camera sensors record light and what that means for both production and post, is all explained well in great detail in this video here:
The section on sensors, exposure and ISO is from 4:30 to 24:03.
Great lecture! What he didn't cover was amplification. Is the output from the sensor amplified e.g. per his example an audio preamp section which amplifies the output of the mic to a signal strength that the mixer can work with, to an amplitude for coding onto storage media. Or, conversely, is the output of the sensor attenuated to accomplish the same result.
Edit::::::
Just found another great video which explained it does both, which makes a lot of sense. Below native is attenuated and above is amplified. Dual ISO is achieved by altering the bit well and still uses only one amplification/attenuation circuit. Really neat stuff.