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Regular: Creates a balance between fan noise and camera temperature.
Rec low: Increases fan speed during standby to pre-cool the camera. Minimizes fan
speed/noise during recording.
Note: Ideal in an environment warmer than 25 °C (77 °F).
Low Noise: Minimizes fan noise during both standby and recording.
Note: With data rates above 100 MB/s (due to fps/codec setting), the fan speed
automatically increases to prevent CFast 2.0 cards from overheating.