SAE Mode (Shutter Auto Exposure)
The shutter speed is user-adjustable in this mode. The camera automatically determines the best Iris F-stop value
for an optimal exposure setting. This setting will come with a cost. The higher the shutter speed, the more sharp the
picture become, but also the more dark the picture will be.
The shutter speed is the amount of time that each frame of the sensor has been exposed to light.
To compensate for poor lighting conditions, it is possible to adjust the Gain and DRC (Dynamic Range
Compression). The DRC works by compressing the natural dynamic range of the image, by taking out the
darkest and lightest parts. This can be a particular helpful setting when the light conditions are challenging. The
differences should be clearly visible in dark parts, as they will become lighter / more grey as the level of DRC
increases.
Figure 28: Exposure > Shutter speed at 1/25 (left) and 1/500 (right)
AAE Mode (Aperture Auto Exposure)
In this mode you can set the Iris F-stop value (aperture). The higher the F-stop value, the deeper the depth of
field in the picture. The camera will automatically set the shutter speed based on the Iris F-stop set by the user. As
the camera determines the preferable shutter speed, it is possible to turn the anti flicker setting to the required
50Hz or 60Hz to eliminate the effects of a shutter functioning at 1/50th of a second, for example. Like, with the
shutter speed in SAE mode, there is a cost. The higher the F-stop value, the more dark the picture become. To
compensate this you can set both the Gain Limit and the DRC.
Figure 29: Exposure > AAE with Iris F1.8 (left) and Iris F6.8 (right)
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