All Reolink products except the battery-powered cameras.
Exposure: the amount of time that the sensor receives light within one “frame” of the measurement.
Select the exposure level of the camera based on pre-defined conditions.
Under Exposure, the user can mainly adjust the Gain and Shutter value.
Gain: a multiplier that digitally amplifies the camera’s received light levels.
Shutter: a mechanical device that limits the passage of light, the higher the value is, the longer the exposure time will be.
There are four options under Exposure:
1. Auto: the camera will automatically adjust and optimize the gain/shutter value according to different environments.
2. Low Noise: Low noise will do some help to reduce the image noise, choose this option and adjust the Gain value to get the best result.
Increasing the Gain raises the intensity of the entire signal. This allows very low-intensity values to be discerned and used in subsequent calculations. However, since Gain is a simple multiplier, the noise level will increase right along with the signal.
3. Anti-smearing: choose this option to adjust the Shutter value which affects the exposure time.
Increasing the Exposure time lets more light to reach the sensor. However, the longer duration also makes the measurement more susceptible to vibration and turbulence which can wash out, or smear, moving fringes.
4. Manual: adjust shutter range and gain value of the camera manually.