What is the dynamic range and sensitivity of the SI-2K MINI?
The dynamic range has been tested by an independent lab and found to be 10.5 stops. The native ISO rating of the 10-bit log RAW data is ISO 250 at 3200K. Other sensitivity rates at 3200K are as follows: +3db — ISO 320, +6db — ISO 500, +9db — ISO 640, and +12db — ISO 1000. Sensitivity does not increase linearly at the higher ISO settings due to the fact that we are implementing gain in the analog domain, not the digital, therefore there is a certain amount of non-linearity to the sensitivity curve as the analog gains are increased. The advantage of analog gains is that they are visually “cleaner” for a given ISO than digital gains, as the sensor is able to maximize the signal swing digitized by the A/D converter rather than stretching bits already digitized, which can begin to incur quantization noise, especially at the higher gains due to the fact that once digitization of the signal takes place, the headroom amount if fixed by the amount of bits digitized and the SNR of the signal
