Basler Camera User Manual page 192

Features
Shift by 2
When the camera is set to shift by 2, the output from the
camera will include bit 9 through bit 2 from the ADC.
The result of shifting twice is that the output of the
camera is effectively multiplied by 4.
If the pixel values being output by the camera's sensor
are high enough to set bit 10 or bit 11 to 1, we
recommend not using shift by 2. If you do nonetheless,
all bits output from the camera will automatically be set
to 1. Therefore, you should only use the shift by 2
setting when your pixel readings with an 8 bit pixel format selected and with digital shift disabled are
all less than 64.
Shift by 3
When the camera is set to shift by 3, the output from
the camera will include bit 8 through bit 1 from the
ADC.
The result of shifting three times is that the output of
the camera is effectively multiplied by 8.
If the pixel values being output by the camera's sensor
are high enough to set bit 9, bit 10, or bit 11 to 1, we
recommend not using shift by 3. If you do nonetheless,
all bits output from the camera will automatically be set
to 1. Therefore, that you should only use the shift by 3
setting when your pixel readings with an 8 bit pixel format selected and with digital shift disabled are
all less than 32.
Shift by 4
When the camera is set to shift by 4, the output from
the camera will include bit 7 through bit 0 from the
ADC.
The result of shifting four times is that the output of
the camera is effectively multiplied by 16.
If the pixel values being output by the camera's
sensor are high enough to set bit 8, bit 9, bit 10, or bit
11 to 1, we recommend not using shift by 4. If you do
nonetheless, all bits output from the camera will
automatically be set to 1. Therefore, you should only use the multiply by 4 setting when your pixel
readings with an 8 bit pixel format selected and with digital shift disabled are all less than 16.
182
ADC
bit bit bit bit bit bit bit
11 10 9 8 7 6 5
M
S
B
Shifted Twice
ADC
bit bit bit bit bit bit bit
11 10 9 8 7 6 5
M
S
B
Shifted Three Times
ADC
bit bit bit bit bit bit bit
11 10 9 8 7 6 5
M
S
B
Shifted Four Times
AW00123402000
bit bit bit bit bit
4 3 2 1 0
L
S
B
bit bit bit bit bit
4 3 2 1 0
L
S
B
bit bit bit bit bit
4 3 2 1 0
L
S
B
Basler ace USB 3.0