Frame width / height and offsets use the same SDK functions as ZWO's ASIStudio's ROI and do increase frame rates in similar way. The ADC depth shown in INDI panel is just for information, the driver always saves either 8 or 16 bit data depending on the chosen format. As for the high speed ADC conversion (usually 10 bit) there is control HighSpeedMode in INDI panel among all the others exposed by the SDK, gain, offset, USB bandwidth, and so on. Setting it to 1 enables the faster ADC function.

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